Frederic's AirBnB was a delight. We arrived, from the US, prior to 2PM check-in (due to the nature of our flights), and the ApartmentsBCN team welcomed us openly into their office. Check in was smooth, and Frederic's team offered lots of information when it came to nearby eateries, attractions and shops. The AirBnB is located in a quaint neighborhood adjacent to Sagrada Familia; roughly 15-20 min walk. The neighborhood is extremely walkable and close to several places.
The AirBnB itself is beautiful and spacious. The apartment was clean and included all the kitchen necessities, bathroom towels and extra blankets.
I would highly recommend this location--my party of 5 thoroughly enjoyed the experience and loved exploring this and many other areas of Barcelona.