We were greeted by Laura, David's wife, who was very friendly and informative. The flat was spotless and contained everything we needed for our 2 night stay incl towels. We used it as a base as we were out sightseeing all day . I did cook one dinner on the two electric rings and there is also a microwave. The rooms are quite small but absolutely perfect for our needs.
The flat is a few mins walk between two metro stations (Joanic and AlfonsX - yellow line) and 15 min walk from Sagrada Familial. The metro is very efficient. The area is residential with blocks of flats and felt safe (we would return the two evenings late).
Laura and David allowed us to check in early and on the last day let us leave our luggage until 5 pm which was very useful. Many thanks!