We had the pleasure to stay in Adam's apartment and it was great.
The biggest advantage I would say it is the location of the apartment - it's really convenient to reach anything from there. Good restaurants around / great breakfast locations / close to few metro stations that can grant access to most of the metro lines, so you're super connected to all parts of Barca.
I would just suggest a bit more attention to 2 small things:
- better explanations of how to connect to Wi-Fi (cause is a bit hard or unsuccessful)
- the refill of the shower gel dossers before checking in new travelers
All the rest was obviously perfect.
I'm recommending this place with an open heart to anybody who want's to see Barcelona.
Cheers :)