We loved our stay here. The apartment has a “hotel” feel to it, with lots of small attentions like a new “cleaning kit” for the kitchen or their own branded soap and shampoo in the shower. They have a reception opened during the day and a 24h help line. During the days, you can checkin with the person at the reception and outside business hours, they have an automated checkin machine, which looks like a big ATM, right in the lobby.
The apartment is well stocked (kitchenware, etc.), has a small over, stove top, dishwasher and fridge. There is also an elevator for those who want to avoid stairs.
The apartment itself is within walking distance of the Sagrada Familia and its metro station.
Honestly, this was one of the best Airbnb I had in a big city.