This was our favorite Airbnb in our multi city Spain vacation. The apartment is very centric: 8 mins walking from Atocha station (a hub for fast and local trains), like 2 mins walk from Reina Sofía, and walking distance to everything else in the center (the Prado, the Retiro Park, Puerta del Sol, Plaza Mayor, Palacio Real, eating spots, etc). Alfonso works on antiques and design, and you can definitely tell in the decor of his house, a definite and unexpected plus. Also, the house is sparkling clean. It's on a 4th floor but there is an elevator, so not a problem at all. The rental comes with breakfast, and this is such a convenience, it saved us a lot of time if you consider how slow service in Spain is (not criticizing, just stating a fact); seriously, breakfast is a big plus. Now, the best part of this place is the host himself. I expect this to be, of course, a matter of personality, but we really liked Alfonso. Great guy, sharp, affable, cultured, respectful, and warm. I would visit his shop often just to hang out if we lived in Madrid, and I suspect many of his guests feel similarly. Finally, he was temporarily cat sitting his parents' kitten during our stay (which he checked in with us previously to make sure it wouldn't be a problem), and we loved her, cute and sweet little devil.