My boyfriend and I stayed 3 nights at Geo's place. He is very kind and explained us everything as well as reacted quickly to our messages.
The apartment is located in a central point of Barcelona which is good, the surroundings can get a bit weird at some moments but overall it is nice.
You have to climb a lot of small stairs to reach the flat which is complicated with a big suitcase so better be 2 people :)
Regarding bathroom, it is a bit small and we found some hair in the sink but other than that it was ok.
The bedroom was a bit dusty but the bed was comfortable and we could sleep well except we once had to sleep with bad smell from the kitchen (because located close to the bedroom) and we were once woken up at night by weird noises (screams?).
The window opens on the inside court which was very quiet during our stay so we could sleep well overall. Maybe it can get hot in summer without an A/C but in October we did not have problems with that.
Geo and his girlfriend respected our privacy which is important considering we share the whole flat except for the bedroom.
Even if we had some pain points, I would overall recommend to stay at Geo's flat, I think the price is ok for what you get. Moreover they accepted that I leave my luggage for a couple of hours more so it is practical :)
Thanks again for welcoming us !