The check in process was very easy, the house was very clean and well equipped, and the location is truly perfect. We were able to walk everywhere.
Both the bed and the couch (that turns into a bed) were sufficiently comfy and perfect for a good night's rest after a long day of visiting Madrid. There's no air conditioner but there is an electric fan that saved us from the scorching summer heat.
Overall it was a good experience and I would strongly recommend choosing Javi's place for your next visit to Madrid.