Alvaro's apartment is beautiful! It is located right in the city center, very walkable and also close to the Metro. He was a gracious host who allowed me to leave my bags before check in time and had them put in the apartment for me when the apartment was clean and ready. He was very communicative and responsive to requests and assisted me promptly when I had trouble with the lock getting in. (Sometimes unlocking the door on the app was a little hit or miss but we just took the keys with us as a backup and there was no problem.) He also sent an extensive list of restaurants and other recommendations to make for a great stay in Madrid. Overall, amazing apartment and host and I would definitely recommend and stay again!