The apartment of Juan is just the best place you can choose for your stay in Madrid. He managed everything perfectly with the check-in and also provided a lot of usful information for visitors to Madrid.
The apartment is very nice, located on the top floor of the building, very clean and quiet. You have everything you would need, fully equiped kitchen, aircondition, WiFi... The location is just perfect - 5 minutes walk to Metro or Cercanias(train) stration, as it is in the city center you can walk to most of the sights, you can find hundreds of bars, restaurants and shops around.
I can highly recommended Juan as a host and also his nice apartment. I would stay here again when I visit Madrid next time.