Our family of 5 spent 18 days in this apartment and we absolutely loved it. The place is in a perfect location, 3-4 minute walk from two metro station and with several bus stations within a block or two away. We have stayed in 13 different Airbnbs in the past 3 months and this was by far the best place we've been. It's greatness is not in luxury but in functionality of the apartment combined with its location.
Our three kids each had their own small bedroom and one bathroom to share while we were separated from them with a hallway and had our own bathroom and spacious bedroom. The kithchen is well enough equiped to cook full meals. Everything was clean and orderly. The hosts were very accomodating on both check in and check out, allowing us to come in earlier and leave later, especially considering that they are currently fully booked and had to juggle cleaning to help us with later check out. We would highly recommend this place to anyone coming to Barcelona, especially for larger families/groups.