This was the best Airbnb experience I have had in seven countries! Aitor pays attention to all the details, his place is extremely well located, both for sightseeing in the Casco Viejo as well as the Ensanche and Guggenheim, and he provided some very useful tourist tips, lent a metro card that he keeps for travelers, and even gifted me an adaptor that I will need for the rest of my travels in Spain.