The flat is situated in Malasaña, one of the most beautiful areas of Madrid. It's surrounded by many bars and restaurants and if you like walking you can discover the whole city by foot starting from here. The room is private but the flat is shared with other guests. As everybody was really respectful we didn't mind that at all. Charo is very quick in answering any question before the arrival. We really enjoyed our stay in Madrid. :)
Ps: If you are very sensitive to noise you could maybe have some trouble with sleeping as the window is pointing to a usually quite crowded square.