We were warmly welcome by Pilar, that was a very nice host.
The appartment was as described, nice, well furnished, and clean. Everything was brand new.
The location is perfect, very close from the center and located calle Huertas, a very pleasant and lively street (bars, restaurants, ...).
The street is a bit noisy on Saturday Night (only!) ,but it is not a problem at all as it is part of the Madrid experience :)
The appartment is on the first floor. We spent a very nice journey with my wife and my one year old baby.
We would highly recommend this place and come back with pleasure again. Thanks Pilar !