My most unique (and physically, my smallest) Airbnb experience, and well worth it! I needed to be located in central Madrid, and there is no place more central than this. Short, five-minute walks to many wonderful plazas - Mayor, Tirso de Molina, Sol - and all the transit links you'll need. Tomás and his roommates are very friendly, warm and welcoming. I'd definitely stay with them again if I had the good fortune of getting back to Madrid.