Juan's place is very clean and as pictured. The check in was easy and smooth. Plaza Mayor and puerta del Sol are about 12-15mins walk away. Couple minor problems with the shower and toilet but didn't affect our stay. Juan left a bottle of red wine which was a nice touch!
For those sensitive to noises, be sure to use earplugs. You could hear sounds from the street and your neighbor party until 3am. It was a vibrant neighborhood.
The bathroom could use some hooks as there were no place to hang bath towels and hand towels. The kitchen could use some kitchen towels. We bought detergent from Carrefour express around the block so we could do laundry using the washer/dryer combo. It took a long time, 4.5 hours per small load but washs and drys well.