I am very glad that I chose this room for one month living in Madrid. I think that it's better than you can imagine after reading Juan's notice.
1) The location is very good. It is close to two underground stations (7 and 15 mins) as well as the railway station from where you can take a train to the airport (and arrive from). The neighborhood is nice and safety. It is not a tourist area at all but this fact give an opportunity to feel yourself a little bit as a local. There are nice park Rio as well as a contemporary art-center Matadero Madrid where people can spend time in different ways - sitting in the library, drinking in a cafe, visiting exhibitions etc
2) I have never met Juan in reality but i didn't have any problems with communications. I lived with his friends who are really great neighbours and helpers. They gave me a help a lot of time and spending time with them also was very interesting. They speak English and Spanish fluently and they are very nice and friendly.
3) The flat has an unusual story. Ask about "tailor" but when you will live there.

Прекрасные хозяева, прекрасный район, комната очень комфортна для жизни и работы.