All in all we enjoyed our stay in Barcelona! Location was great and the apartment was pretty roomy by European standards. Kitchen was fully stocked with everything you'd need to cook.
However, our check-in process was a tad frustrating as the host was running late and was difficult to communicate with (we rang the doorbell but the host ignored it even though she was inside). We ended up siting on the sidewalk outside the AirB&B for 45 minutes. There was also a bit of black mold in the shower.