Koni was very communicative throughout our stay, the apartment itself is a true gem, close to 90% of the things you need to get to when in Barcelona, and for the rest... there's a metro station right outside the apartment.
it's very cozy and comfortable, has all the amenities one would need to actually live there.
everything from check-in to check-out went smoothly and hassle free.
10/10 would recommend.