If you're heading to Madrid then you have to stay at Mariano's! Not only is his apartment beautiful, but his neighborhood is very central, near the train station and close to almost every attraction you want to see. The most you'll walk is 20 minutes to get to any destination. Mariano is super nice and friendly. He's there to help answer any questions you might have but he does not hover and let's you enjoy your time. Definitely recommend staying here!