I have to say I enjoyed my stay here quite a lot. The flat was very central with walking distance to all the sites in central Madrid. It was very bright, spacious and clean. José was very welcoming when we arrived and very friendly as well. He keeps the place well-equipped with everything you'd need to be comfortable.
My only (minor) criticism would be that if you like to keep a window open while you sleep like me, then you will hear some noise from party-goers. However we stayed over the weekend so I'm pretty sure that's normal everywhere.