Fantastic apartment! Spacious, clean, everything you need is there. Great view over the plaza. Good location, everything is at walking distance, including a metro-stop if you don't feel like walking.
Maria was easy to contact, quick responses, very helpfull.
We had a great time in Madrid, because of the great city, but also because of this nice apartment to come back to after a day of sightseeing. Would advice this to everyone staying in Madrid!!