Highly recommend Adrian’s place!
First of all, the location is superb! Walking distance to Puerta del Sol, Plaza Mayor and all main sites in Madrid. Very easy commute to/from the airport by public transportation.
Second, Adrian’s apt is very clean, stylish and has all the amenities you might need. Since the room is the attic, I’d not recommend it to tall people.
Third, Adrian is a extremely friendly and helpful host. We had a last minute issue and needed to have a document shipped to the apt, and Adrian kindly offered to receive it for us while we were away. He also made us feel at home throughout our stay. We’d definitely stay again at Adrian’s (and in fact, we did - we returned to Adrian’s place a second time when we went back to Madrid for our final days in Spain). Overall, great experience. 10/10