Stop looking for a flat. I spent 4 days in Carlos and Frank flat. OMG! Communication was great at all times. Apartment was CLEAN. My daughter is allergic to dust. I did not have to worry about it. They help me with the bags. They gave me information about the city. They helped me to find a taxi to go to the train station. Flat is in the downtown Madrid. I will recommend this flat 100 percent. Thank you Carlos and Frank.