We were six people who stayed for 4 nights. David was quick to respond to my messages about check-in, let us check in early which was great! One of the bedrooms is quite large, the other two a bit small but fits your things.
The living space was big enough for all of us to sit together. The dining space (in the kitchen) was too small for six; that is clear from the photos. The living room furniture is functional but a bit worn-out.
The location is great. Right next to Plaza Real and the Ramblas. Lots of places to eat, walkable to most sites.