I had a really good time there.
Javier prepared host who welcomed me friendly. He gave me great advices to visit the city at day and night! The social life was top:)
It's a great atmosphere in his appartment. It's full of his selfmades and interesting paintings. You have a nice patio, which brings a lot of light in the flat.The accomodation was very clean aswell.
So I can definitely recommend this place to everyone who is planning to go to Madrid!