I had a great experience in Maria's house. The flat is in a nice and calm neighboorhood near Madrid's heart: from there you can walk to Gran Vía and Sol or also take the near Metro at Iglesia. Maria is the perfect host and offers you everything that you need. Also the feeling was really good with the other people there on air b&b and Maria tries to introduce each other so that we could go out all together at night. She was so nice. Five stars to her and her kindness!