This place was perfect. First of all, it was very warm with automatic heating during the middle of November, when the temperature outside fell down. Very clean and it has everything you need. Metro station just at the exit or you can even walk to the city center if you're not in a rush. Big supermarket across the street. We arrived in the morning and Ana let us check-in early, so we had a whole day to explore the city. Thank you!
As a side-note - hosts have to register their guests with the police according to the Spanish law, so you would need to provide identification or a passport beforehand to let them do it.