i saw very little of Carlos as we were both rarely in the appartment, but when I did see him he seemed a nice guy. The appartment was clean and the shower was one of the best I've used, i could stand in it for hours. the room was large and spacious and the bed was comfortable. I liked the location, away from the tourists which had everything you could ask for nearby. If Celtic ever play in Madrid again, I will be staying with Carlos.