The location is fantastic!. Right at the Puerta del Sol, but actually the apartment is very quiet. As you might expect, given the central location, the apartment is a bit small, but the bedrooms are quite adequately sized. So if you want to be right in the center, this is the place.
The owner was fantastic. I was pickpocketed and he loaned me some cash and let me use his address to have new credit cards sent. He also sent the cards to me as soon as they arrived at his place. He volunteered to set up a car to pick me up when I left.
There was a problem with the electricity. I would verify with the owner that the problem has been solved before renting.