Our checkin was seamless and they allowed us to drop our luggage off early. Our biggest concern with this Airbnb was that the washroom didn’t have a heater and it was as if we were in a freezer. The host did give a portable heater however it wasn’t safe to have it in their while showering since the washroom wasn’t big. Also a side note while showering it would intermittently go from hot and cold.
If you are travelling in the fall I wouldn’t book this Airbnb since they don’t have a heater. Otherwise location is reasonable about 4 min walk to Sagrada Família!