We spent 4 days in Madrid at Chris's place and it was really great! The apartment is in a nice neighborhood with lots of restaurants and bars and in a walk-distance to the city center. It is very easy to reach the apartment from the airport and there is 24/7 security in the building, so you can access the place easily, as well. The place is very clean and well equipped. Cris's was very supportive all the time and she answered all of our questions just in few minuets. We are very thankful for our time in her place and we can strongly recommend it!