I want to review this place with 6 stars. The experience was awesome, I didn't feel I was out of my house. Javier is so nice and friendly, I feel I meet him for a long time. His sister Maria makes me feel at the home from day one. The location is perfect, I used the Opera Metro every day, and is so a good neighborhood close to whatever you are looking for (shops, rest, walking)
Be sure to reserve a room with a street view, the value deserves it. I will be back in Madrid, you need more than 10 days for sure.