Carlos is perfect host. He's very attentive and responsible. He was very kind and very polite, gave the answers immediately, and provided us with all the useful information about the appartment, transport, how to reach it from airport, etc. The flat has very central position, so we didn't have to buy metro ticket, just saw all Madrid on foot. The appartment is exactly like on pictures. It was very clean inside. I liked so much that there's wooden parquet floor in it, (tile floor only in the bathroom), heating with the temperature you can regulate for your comfort, interior is made with taste, simple and very nice. We were unlucky with the neighbours who made noise the first night, but as soon as I told it to Carlos, he was very helpful and the same day went to talk to them. And after that we didn't hear our neighbours at all. We were very pleased and thankful. Next time in Madrid I'll choose the same appartment with the same host. I'd recommend it to my friends.