A very nice apartment near in a charming area ! It's a bit far from the city center, but at least the neighborhood is very local, and quiet during the night ; and with the metro not far away it's kinda easy to reach the city center.
And close to the apartment you can visit the park Guell, beautiful, and former bunkers now open to public which are not full of tourists, very pleasant.
Communication was very easy with Joan and Stefanie, they are very helpful and always did their best to improve our stay at their place ! So I strongly recommend it ! :)