Fantastic apartment in great location. We really enjoyed walking (2 minutes!) over to Sant Antoni market every morning to get breakfast. And great place to be based to explore the rest of Barcelona.
Apartment is beautiful (check out the tile floors that run all the way through it) and had plenty of room for the 6 adults in our group. The only downside to this place, for a group, is the need to be very quiet. This is a residential building with very thin walls as sound seems to travel through them effortlessly. While the sounds from other apartments didn't bother us in the least, we had to very cognisant of our noise at night. That being said, this is most likely the case in all apartment buildings in Barcelona.
Over all great experience, would highly recommend.