Zarko was a good host. Indeed he was like a flatmate to us, so friendly and kind in meeting all our needs, giving us recommendations about many things that he thought might be of help in navigating the beautiful and charming Madrid. The apartment was very clean and tidy within walking distance even to the city center (20 mins.) Bus and metro stations were five mins. walk to Zarko's place. Overall, we enjoyed our stay at his place and highly recommend it.
Muchas gracias, Zarko!