First experience with AirBnB and definitely a positive one. The apartment is well described, it has a large living room, a relatively big kitchenette, two large bedrooms and a bathroom with shower, sink and WC. Everything is well equipped and in good working order. Internet, hot water, heating - impeccable. Big plus for family with small kids - it is on ground floor and easily accessible with a stroller. Another huge advantage is the location - in the middle of busy La Latina district with plenty of bars, shops and restaurants, only 15 minutes walking to the Royal Palace, San Miguel market, and just a bit longer to Prado and Queen Sophia museum.
Sergio waited for us in the apartment and helped with luggage and gave some description of the neighbourhood. On the last day we could leave when we needed.
Few minor things to be aware of: (1) the living room that gives onto C/ del Aguila is rather noisy, but the bedrooms are fine; (2) the windows in the living room are dimmed; (3) almost none of the cab drivers knew the street, so it is important to give some additional directions (e.g. c/ Calatrava, near Toledo road or San Francisco square); (4) the matrass in the master bedroom is way too soft to my personal taste. We ended up sleeping in the other room on firmer mattrasses.
Sergio - many thanks for a wonderful vacation!