We stayed at Marta's place for six months. The location of the apartment is just perfect. Main city attractions are within walking distance. Main city square Puerta de Sol is 10 minutes walking from the apartment. It is in a quiet building, although the street can sometimes become noisy because of the traffic during the day. There is always hot water, which is very helpful especially when there are more than two people. In general, the apartment is excellent choice when comming to visit Madrid as a tourist. Moreover, Marta was very responsive for any problem and question we had.