Once again, I chose to stay in a hotel from the High Tech chain. This is outside the city, near the airport, so it's ideal if you're just passing through Madrid. In fact, its location near the airport is very convenient. The hotel stands on a quiet street, with little traffic. It offers a gym and outdoor pool for sports, and the rooms are very comfortable and modern (shower with massage jets) and quite luxurious (plasma screen, air conditioning, etc..) You will not be disappointed. However, for a extended stay, its location on the outskirts of the city wouldn't be ideal.