Mario’s place is excellent. Centrally located and you can walk to everything you’d like to see in Madrid. Very clean and made up when we arrived and check-in was quick and easy. Located on a quiet street with great views day and night. I believe I counted 105 steps up to the top, so don’t bring a lot of luggage, but it certainly isn’t a dealbreaker and it’ll work off all the churros and chocolate. The flat is easily accessible by metro and Renfe from T4 at the airport to SOL. Fast, reliable WiFi. Washing machine available. Quick Tips: Mind your head on the ceilings, and shower quickly. All around, 5 Stars. Thanks, Mario.