What a great place this is. Right at the edge of the vibrant La Latina district. There are lots of bars and restaurants within walking distance including the Rastro Flea market, only 15/20mins away, every Sunday. The room/bathroom is separate within an existing apartment. It is part of a residential complex with 24/7 security protection. The unit is clean and bright with a comfortable bed. Communications with Maria, although she doesn't live there, are very good and prompt.
Buses and Metro services are very cheap and close by if one wants to go to the city centre, museums etc. Madrid is one of the great cities to visit. I enjoyed it and my unit at Calle de los Olmos very much.