Not sure why there are so many good reviews, maybe they have low expectations or maybe the host reports everything he doesn't agree with.
Cleanliness:
The communal area is disgusting. In the toilet, you can see brown stains on the wall (I forced myself to ignore them whenever I got in). Bathroom is in poor state as well (do not be fooled by nice pictures, they are framed in such a way to look nice. As in, avoids the important bits, like floor, walls, bath). The kitchen looks like nobody lived in the house for centuries, crumbling from every corner, garbage spilling on the floor, dirty kitchen sink.
Accuracy:
Pictures are well framed, but misleading.
Checkin:
The host responded to other reviewers who complained about the checkin process by saying that guests haven't communicated properly, but, looking at my experience, I doubt that's the case. I arrived at the place at the exact moment I told him I would, but I wasn't able to get him through buzzer or phone number. In the upcoming days, I found out the house recommendation is to keep the buzzer off (because of annoying delivering calls for other flats). I had to wait in front of the building for quite a while to get a reply from him.
Communication was decent. Although, I didn't like his recommendation to not put an airbnb review if it's gonna be bellow 5 stars.
Location was alright.
Value:
I got hostels in Barcelona for 10euro/night which were 5 star hotels compared with this place.
Disturbances:
The host used to urinate with the door open and everyone could hear the noise of piss falling straight in the water. It was an horrible experience.
I got woken up every single day around 6am-7am by other people in the house (potentially by the host as well) because they were banging every door from every other room in the house (bathroom, toilet, kitchen, their own doors, main entry). I mentioned this to the host, he said will take care of it, but nothing changed and I had to endure it for almost 12 days.
That's pretty much it, the place is ok if you have low expectations.