We stayed in the apartment of Ursula for ten days.
The apartment is located in a great area, very very close to Plaza de Espana, the metro, Sol square and city center. We could go anywhere, quickly and easily, on foot or by metro.
We got a private room, quite small, but enough for us. It is clean and breezy and the beds were comfortable.
The apartment is not large but very clean (Ursula really careful about it, and it's excellent)

Ursula is very, very nice and funny young woman. She does not know English, and we did not know Spanish, but nevertheless we managed to communicate and became good friends.
It was very important to her that we feel at home and so it was.

In conclusion, we had a wonderful vacation in Madrid, and many thanks to the experience of living with Ursula and her family.