Sofia is an outstanding host! Communication was easy and efficient making it really easy to get all sorted out.
The location of the flat is great, meters away from an underground station, with a couple of cafes right around the corner a markets no so distant if anything is needed.
If you enjoy a walk, the flat is 20min away from the Sagrada Familia (I have long legs though) and from there you can just keep on going to all different attractions around Barcelona.
100% recommended!