This is clearly the kind of place where no one actually lives. The couple who owns it have a ton of other listings, so do this as a business - these types of places have always been my worst AirBnb experiences, and that held true for this place. It’s tiny, it’s grimy, it’s smelly. Like others have said, they give you two rolls of toilet paper even if you’re staying for a week. If there are complaints they stop responding. They hired a guy to be a caretaker of sorts but he was gone for the weekends. On the plus side, the place was cheap and in a great location. Oh, and the terrace was nice, and it was convenient to have a washer. There’s no dryer but that’s standard in Barcelona. There is a line to hang things on the terrace.
You get what you pay for - don’t expect to be wowed by this place.