We spent in Olga's apartment a week in the middle of really hot Madrid summer and it was great. The apartment was clean and so cozy, we had everything we needed plus one extra fan. The fan and air conditioner were our best friends that made it possible for us to sleep comfortable all night long with 40 (104f) degrees outside. The location of the apartment is also amazing, we could walk everywhere and used metro only once. Olga and her fiance were very nice, helpful and quick with their replies.