Both our hosts were very helpful and responsive. The apartment is nicely renovated to enhance the charm of the old building (I especially liked the stones and bricks from the old wall being left on sight inside).
The neighborhood is safe, suited for walks, with lots of shops and bars and not very far from the Sagrada Familia.
Another lovely thing is the parrot of the neighbor from across the street, that is greeting you once you get on the balcony.