Dervys and Rutilio are the best! The apartment was just as pictured, they both met us there upon arrival, and even offered to take us around town to show us the best parts of Madrid since we only had a 20 hour layover. It's a perfect location- so central and so quick to the airport. You can walk everywhere from the apartment. It's well stocked with anything you need for a short or long stay. Just note that there isn't any wifi, which we didn't read carefully before booking. Not a problem since there's an internet cafe downstairs and a Starbucks and McDonald's, both with free wifi, on the next block. I would definitely stay here again!