Kristian was very helpful, very friendly, a perfect host, told me me about places which I had to visit in Madrid, even gave me a map :) The flat was clean and location is splendid :) Heart of a city, just 5 steps from Atocha street and Puerta del Sol. One thing, the flat is very dark, but come on, if you're in Madrid the last thing you'll do is stay at home :) Great choice when you're in this amazing city :)