Great spacious apartment with the best of locations; close to the hectic Sol square but at the same time the apartment was located on a fairly quiet street. Plus the sealing on the balcony doors were really good, which was really important in order to keep the noise away from the streets. (I've had previous experiences in Spain with really bad sealing in windows and doors)
Apartment was very clean and fresh and had everything you would need from a vacation home. A 5th floor apartment with an elevator, a nice bonus for lazy people.