I had a lovely stay at Marián and Juan Gabriel's place. They communicated well in advance re: logistics and fun things to do (and had great recommendations!)

The neighbourhood is excellent - lots of fun bars and cafés, and extremely well situated for exploring Madrid (walked easily to the Prado, Reina Sofia). Very close to Atocha station as well.

The apartment is completely renovated and very clean. The building is on a lively corner and the room is exterior, but I am a light sleeper and had no trouble sleeping with my earplugs.