This is our first time in Spain, and we are glad to have stayed at Juan's accommodation.
While the bedrooms are a little small (too small to put your luggage there as there are more than enough cupboards in it's place), the rest of the space is anything but small.
From the fridge to the rooftop access, if you are coming to Madrid with friends and family, this is a great location. It is 500m away from a train station that is easy to walk to, and the nearby grocery is great! (Try to orange juice!)