It's a student residence rather than a hotel. (I'm very jealous of the students living there!) The sauna is not available for short-term guests. They didn't even let me go to the vending machines alone (coffee and snacks), someone had to accompany me. The swimming pool was great, but the space isn't heated. I was there in February. Nevertheless I went to the jacuzzi almost every day. When I first got to the room I wondered if I was to bring my own bedsheets but they did have them :D Also, I didn't expect there to be cleaning but they did it. The wifi was good as far as I remember.
The location is great, the metro is near and Santiago Bernabéu stadium is fairly close too (I went there by bus, going by metro is quite inconvenient). The TV had the Real Madrid channel btw. A CityTour bus stops at the Bernabéu as well. There's a bus to the centre, if you have the time it's better than taking the metro because you'll see a lot of Madrid.