I had a great stay at Fernando's apartment in Salamanca district in March, with my husband and our 4-year-old. The apartment is in a great area, very well served by the Metro (we used Núñez de Balboa station, only minutes from the front door), with great local restaurants/cafes (family brunch at Le Pain Quotidien, Calle de Velázquez is recommended!). There are also plenty of taxis, should you need a quick ride to/from the airport. As others have said, the location is great, you are close to the centre of Madrid without the crowds. The apartment itself is very chic, comfortable, spotlessly clean and feels more spacious than the photos suggest. During our visit, weather was changeable, we saw snow and sunshine, the apartment was always warm (without being stuffy or hot). The apartment is on the 3rd floor with no lift, so there are a lot of stairs, but our 4-year-old managed fine. We had no problems with the wi-fi. Fernando was very quick to respond to our communications before and during the visit and very kindly allowed us to stay after the official check-out time on our last day, when we had an evening flight. All in all, we had a great stay. Thank you, Fernando!