The apartment is very central in a fun, bit crowdy neighbourhood. The contact with Melvin was good, a girl was at the location to hand over the keys after approximately 5 minutes so that was fine. He also offered to get us a taxi from the AirPort and back and we could store our luggage in his Office if we wanted to on the day of departure. We had a nice stay, though the apartments on the same Floor and the street (as expected in the centre of Madrid) was pretty noisy. Melvin, thank you for your hospitality!