A lovely apartment in a great location for the city's attractions. The apartment was clean and modern and had all the facilities we required for our stay. Carlos and Frank were fantastic hosts prior to our arrival and throughout our stay. They answered any questions we had, responded very quickly and even organised transport for us to the airport. We had a fantastic time in Madrid and would definitely stay with Carlos and Frank again in the future. This was our first time using Air B&B and would definitely recommend.