I highly recommend this apartment, the terrace was awesome! The flat itself was also very nice and comfy, Angeles was very helpful and gave a lot of useful advice before and during the trip.
The surrourrings were nice, especially Gracia, not so many tourists :)
We like to walk, so we walked to the city centre and Lasagradafamilia and Park Guell. If you prefer public transport, metro is very near.
But it was nice to "come home" and have a siesta at the wonderful terrace!
If I returned to Barcelona, I would definetely choose this apartment again :)