The apartment is in an amazing location, right in the gothic quarter and just a couple blocks from La Rambla. Walking distance to a ton of bars, restaurants, etc, and easy access to the subway. Check-in was easy with the virtual key and Adam is very responsive. Spacious and pretty clean.
The main bed was very uncomfortable, but Adam said he would fix it. The pull-out couch didn't work when we tried to sleep on it instead. The elevator was broken throughout our stay and there was scaffolding/construction on the outside of the building that blocked our windows, with workers right outside during the day (we weren't told about this before booking). The shower also needs a curtain as the half-wall of glass doesn't keep much water in.
I would stay again if the above issues were fixed.