Very good place to stay in Madrid ! I really recommend.
I have been to several places in Madrid and this one is definitely one of the best !
Check-in is super easy via the code system and you have the place for yourself. Great for a couple. Also you have pretty much everything you need to cook something and Analía was really thoughtful and nice to include some advice (I stayed at her place twice).
It has also good location. So, do not hesitate, it is definitely good value for money.