Carlos was very accommodating, and very prompt in replying. For any non-Spanish speakers, I would recommending either brushing up on basic Spanish or having google translator to hand as Carlos speaks very little English. He was so friendly and very flexible on arrival and leaving times. The flat itself was perfect for a couple or single traveller, compact but didn't feel claustrophobic. Location and view was by far the best thing - there is a rooftop that has incredible views that is just a few flights up from the floor of the flat.