We stayed there for 1 night before we left Madrid. Definetly recommend staying there. When you check in you get to pick what floor you go on. The hotel has some very futyristic floor and som not so, the only thing I would watch out for it that there werent any door going to the bathroom.
The food in the hotel was excellent as well.
Its a great place to stay , but a bit far out if your wanting to go round madrid.
Check out moneysupermarket
You can get some good deals on the pace