Maria's place is very comfortable, clean, and stylish. It is in a good location with a quick bus ride to the Plaza Mayor, e.g. The widows are very good and street-noise-proof. An organic-food grocery is just at the footsteps of the apartment building. The doormen are very friendly. My communication with Maria via SMS was very efficient and very friendly. (We didn't get a chance to meet.) I've enjoyed my stay and her apartment will be my first go-to place to stay in Madrid on the next trip. Thank you, Maria!