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The Mansion on the Sea - Southernmost House in the USA

3.0 star property

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Mansion Room #201 - Ocean View with private balcony - Adults Only | Terrace/patio
Property amenity
Exterior
Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only | Premium bedding, pillow-top beds, individually furnished
Front of property – evening/night

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Parking available
  • Room service
  • Bar
  • Housekeeping

Explore the area

Map
1400 Duval Street, Key West, FL, 33040
  • Southernmost Point
    ‪1 min walk‬
  • Duval Street
    ‪1 min walk‬
  • South Beach
    ‪2 min walk‬
  • Key West, FL (EYW-Key West Intl.)
    ‪9 min drive‬

Room options

View all photos for Mansion Room #204 - Courtyard View - Adults Only

Mansion Room #204 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #204 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #107 - Ocean View - Adults Only

Mansion Room #107 - Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #107 - Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #203 - Courtyard View - Adults Only

Mansion Room #203 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #203 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #101 -Ocean Front - Adults Only

Bungalow #101 -Ocean Front - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #101 -Ocean Front - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed OR 1 King Bed

View all photos for Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #201 - Ocean View with private balcony - Adults Only

Mansion Room #201 - Ocean View with private balcony - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #201 - Ocean View with private balcony - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #202 - Ocean View - Adults Only

Mansion Room #202 - Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #202 - Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

  • 65 sq m
  • Partial ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #102 - Pool View - Adults Only

Bungalow #102 - Pool View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #102 - Pool View - Adults Only

  • 37 sq m
  • Sleeps 4
  • 1 Queen Bed and 1 Double Sofa Bed

View all photos for Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Cottage #104 - Ocean View w/Direct Pool Access - Adults only | Premium bedding, pillow-top beds, individually furnished

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

  • 28 sq m
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

View all photos for Mansion Room #303 - Courtyard View - Adults Only

Mansion Room #303 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #303 - Courtyard View - Adults Only

  • 46 sq m
  • City view
  • Sleeps 4
  • 2 Queen Beds

View all photos for Lopez House #109 - Courtyard View - Adults Only

Lopez House #109 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #109 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 Queen Bed

View all photos for Lopez House #205 - Partial Ocean View - Adults Only

Lopez House #205 - Partial Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #205 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #206 - Partial Ocean View - Adults Only

Lopez House #206 - Partial Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #206 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #207 - Courtyard View - Adults Only

Lopez House #207 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #207 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #103 - Pool View - Adults Only

Bungalow #103 - Pool View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #103 - Pool View - Adults Only

  • 28 sq m
  • Sleeps 2
  • 1 Queen Bed

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About this property

The Mansion on the Sea - Southernmost House in the USA

Adults-only beach hotel with outdoor pool
An outdoor pool, a restaurant and a bar/lounge are available at this hotel. Continental breakfast is free. Other amenities include a poolside bar, a snack bar/deli and self parking. Housekeeping is available on request.
The Mansion on the Sea - Southernmost House in the USA offers 18 air-conditioned accommodations with free newspapers and coffee/tea makers. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels. Bathrooms include a shower, designer toiletries, complimentary toiletries and hairdryers. Housekeeping is provided on a daily basis.
Recreational amenities at the hotel include an outdoor pool.

The recreational activities listed below are available either on-site or nearby; fees may apply.

Our customers tell us they can't get enough of The Mansion on the Sea - Southernmost House in the USA's great location. During your stay, you're just a quick walk from Duval Street. You'll find features such as free breakfast, plus an outdoor pool and a restaurant.
  • Free continental breakfast served daily
  • Enjoy a bite to eat at Seaside Cafe at Mansion, a café with ocean views
  • Self-parking available for a fee
  • Take a swim in the outdoor pool
  • Services include a concierge, tour or ticket assistance and a porter
  • Guests have great things to say about the helpful staff and the location
  • Steps from Southernmost Point and Duval Street
There's a restaurant on site, as well as a snack bar/deli. You can enjoy a drink at one of the bars, which include a poolside bar and a bar/lounge. Free breakfast is available daily.

An outdoor pool, a terrace, and multilingual staff are also featured at The Mansion on the Sea - Southernmost House in the USA. Parking is available for a fee.

Smoking is allowed in designated areas at this Victorian Key West hotel.

Guests are served a free continental breakfast daily from 8 AM to 10 AM.
Seaside Cafe at Mansion – Overlooking the ocean, this café serves lunch and dinner. Guests can enjoy drinks at the bar.
Room service is available.

Languages

English, French, Russian, Spanish

Property amenities

Internet

  • Available in all rooms: WiFi
  • In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)

Parking and transport

  • Parking on site (USD 20 per night)

Food and drink

  • Free continental breakfast available daily 8 AM to 10 AM
  • A bar/lounge
  • A poolside bar
  • A restaurant
  • Coffee and tea in common areas
  • Snack bar/deli

Restaurants on site

  • Seaside Cafe at Mansion

Things to do

  • Outdoor pool
  • Shopping
  • TV in common areas

Conveniences

  • Free newspapers in lobby
  • Gift shop/newsstand
  • Limited-hour front desk
  • Luggage storage
  • Safe at front desk

Guest services

  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Porter/bellhop
  • Tour and ticket assistance
  • Wedding services

Outdoors

  • Beach loungers
  • Garden
  • On the waterfront
  • Outdoor furniture
  • Picnic area
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Upper floors accessible by stairs only
  • Well-lit path to entrance

Room amenities

Bedroom

  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Designer toiletries
  • Hair dryer
  • Shower
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with premium cable channels
  • Streaming services

Food and drink

  • Coffee/tea maker
  • Room service

More

  • Air conditioning
  • Free daily newspapers
  • Individual furnishings
  • Iron/ironing board

Policies

Check-in

Check-in start time: 4 PM; check-in end time: 10 PM
Early check-in subject to availability
Contactless check-in and check-out are available
Late check-in subject to availability
Minimum check-in age - 18

Check-out

Check-out before 11 AM
Contactless check-out

Special check-in instructions

The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation

Access methods

Front desk (limited hours)

Pets

  • No pets allowed

Children and extra beds

  • Children younger than 18 are not allowed at this adults-only property. All guests 18 and older are welcome.
  • Cots (infant beds) are not available.

Payment types at the property

Important information

Fees

Guests will be asked to pay the following charges at the property:

  • Spring Break deposit: USD 250 per stay for guests aged under 21 years old staying between 1 March and 31 March
  • Resort fee: USD 30.78 per accommodation, per night
The resort fee includes:
  • Beach loungers
  • Beach towels
  • Concierge service
  • Housekeeping
  • In-room bottled water
  • In-room coffee
  • In-room safe
  • Internet access
  • Lending library access
  • Pool access

We've listed all charges provided to us by the property.

Optional extras

The fees and deposits listed below will be charged at the time of service, check-in, or check-out.

  • Self-parking fee: USD 20 per night

This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.

You need to know

This property is managed by a professional host. The provision of housing is linked to their trade, business or profession.
Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old.
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher and a smoke detector
The front desk at this property is open daily from 8:00 AM - 10 PM.
Guests arriving after 8:00 PM must make advance arrangements by contacting the property using the information on the booking confirmation. Front desk staff will greet guests on arrival at the property.

We should mention

  • This is an adults-only property and children 18 years old and younger aren't allowed.
  • Registered guests are the only ones allowed to be in guestrooms.

Property is also known as

Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West

The Mansion on the Sea - Southernmost House in the USA Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 740 out of 1003 reviews
Rating 8 - Good. 171 out of 1003 reviews
Rating 6 - Okay. 61 out of 1003 reviews
Rating 4 - Poor. 19 out of 1003 reviews
Rating 2 - Terrible. 12 out of 1003 reviews

9.4/10

Cleanliness

9.4/10

Staff & service

9.2/10

Amenities

9.0/10

Property conditions & facilities

9.2/10

Eco-friendliness

Reviews

10/10 Excellent

David

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The view is beautiful, gorgeous sunsets, the service is really friendly, clean rooms, and a great pool.
Stayed 5 nights in Dec 2024

6/10 Okay

Timothy

Liked: Cleanliness
Not so great.
We stayed at the Mansion for 2 nights. The pool was ice cold the entire stay, we were told the heater was broken. In the future we will never stay in room 106 again, it is right next to the public restrooms that are open to the public until 8 pm. Which is very noisy and annoying because of all the people. The TV in the room worked the first night but the second night it did not work. The staff gave us $87 dollars off of our 2 night stay, which was $1200. We won’t be going back to this hotel, as there are several others to choose from in the Keys.
Stayed 1 night in Dec 2024

10/10 Excellent

John

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Thanksgiving getaway
Stayed 3 nights in Nov 2024

6/10 Okay

REID

Travelled with partner
Liked: Cleanliness, staff & service
Disliked: Property conditions & facilities
The property owners upgraded the bar area for optimum profitability but have regretfully neglected the hotel grounds especially the bungalows by the pool area. Food and bar servers are excellent. For the price you pay the continental breakfast could be upgraded.
Stayed 4 nights in Nov 2024

10/10 Excellent

Christopher

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Get outside of the standard hotel setting and enjoy a personal experience at the Mansion. Beautiful old home with great character, wonderful staff (Nina was super friendly and happy to engage in historical conversations), amazing food on premise (owner's son) at the Seaside Cafe, and the location is absolutely perfect. Ideal sunrise and sunset location, on the south end of Duval St, this is the perfect place to start and finish your daily exploration of the island. Highly recommend
Stayed 4 nights in Nov 2024

10/10 Excellent

Betty

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Adults only. Interesting history. Loved our room. Very quiet. Staff very pleasant and helpful, like we were right at home. Dining was great. Would definitely recommend.
Stayed 2 nights in Nov 2024

8/10 Good

Michael

Stayed 1 night in Nov 2024

10/10 Excellent

Junko

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Ocean view was great.
Stayed 3 nights in Nov 2024

10/10 Excellent

Janet

Travelled with family
Liked: Cleanliness, staff & service, property conditions & facilities
It is a well maintained historical home with beauty and charm
Stayed 5 nights in Nov 2024

10/10 Excellent

Andrea

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Nov 2024

8/10 Good

Paul

Liked: Cleanliness, staff & service, property conditions & facilities
The property was well located at one end of Duval St. Staff were welcoming and friendly throughout our stay. The room was very nice with a comfortable bed. Unfortunately, there were roadworks directly outside the hotel during our stay which created a lot of noise from early morning and meant we couldn’t make use of the lovely balcony. Check with the hotel if the roadworks have cleared before booking your stay, or ask for a room not facing the works.
Stayed 2 nights in Nov 2024

10/10 Excellent

sean

Travelled with family
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful oasis in Key West
Stayed 3 nights in Oct 2024

10/10 Excellent

Jamie

Travelled with partner
Liked: Cleanliness, staff & service, property conditions & facilities
Amazing and kind staff. Lovely stay.
Stayed 2 nights in Oct 2024

10/10 Excellent

Sarah

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
A perfect stay
A unique hotel, staff were amazing and rooms, pool and area was fabulous. Will definitely be returning.
Stayed 3 nights in Oct 2024

10/10 Excellent

Elisa

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Staff is fantastic, breakfast is delicious, location cannot be beat!!! The cottages have a gorgeous view of the ocean and the sunrise! Will definitely recommend and stay here again!
Stayed 1 night in Oct 2024

10/10 Excellent

Andrea

Travelled with family
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Everything was great except for the “playboy party” that was for the public but made it so we had to vacate the property! The pool then was invaded by gross disgusting people (1200 came to this!) and we decided NOT to use it until it was shocked the next day…. That was a one day we could not use it! I think we should have been compensated. Otherwise it was a beautiful site and I definitely would stay again.
Stayed 3 nights in Oct 2024

10/10 Excellent

Roman, Bellevue

Stayed 1 night in Oct 2024

10/10 Excellent

Theresa, Stockbridge

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 5 nights in Oct 2024

10/10 Excellent

Regina

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Great stay
Wonderful historical hotel in perfect location. Nice restaurant on the water. Will definitely visit again. All the employees were awesome
Stayed 2 nights in Oct 2024

10/10 Excellent

Lynann

Amazing time
Stayed 5 nights in Oct 2024

10/10 Excellent

Lori

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We absolutely LOVED it! Our room was beautiful with fabulous ocean views. The pool was magical, both day and night, also with an ocean view. The staff was extremely friendly and helpful. We can't wait to return!
Stayed 10 nights in Oct 2024

10/10 Excellent

Regina

Liked: Cleanliness, property conditions & facilities, room comfort
Perfect
Great hotel perfect location, excellent service and the room is wonderful
Stayed 1 night in Oct 2024

10/10 Excellent

Stella

Stayed 3 nights in Oct 2024

6/10 Okay

roger

Travelled with partner
Liked: Cleanliness
Disliked: Amenities, property conditions & facilities
Significant construction during entire stay. Very loud and not relaxing. Several hidden charges to park golf cart rental. Delayed checkin
Stayed 4 nights in Oct 2024

10/10 Excellent

Edward

Liked: Cleanliness, staff & service, property conditions & facilities
Property was very clean, staff was very pleasant and helpful. Wull stay again on my next trip to Key West.
Stayed 2 nights in Oct 2024