Loved Rafael and his place! A true gem--would 100% stay here again on our next trip to Madrid. He was super responsive and helpful with our questions throughout our 9-day stay.
I was most impressed with the noise level in the building. As it is in the center of Malasaña, I expected people to be partying outside into the dead of the night, but we didn't have any issues on any day of the week.
A close second is everything we wanted to see (shopping district, the royal palace, various plazas, museums, etc.) was walking distance from the apartment, so we didn't have to take the metro or taxis anywhere we went. Highly recommended!!