First, it should be made clear that the owners are NOT the ones sharing the apartment; there is another Airbnb room/bathroom in the apartment, with the bedroom directly next to your "private bathroom" so the other residents do (understandably) occasionally use your bathroom even though their own upstairs bathroom is available.
Otherwise, the house was fairly clean and well stocked. The building is a little noisy, especially when upstairs residents go up the stairs or if you leave the window open to the street (which we did because the bedroom got too humid and stuffy). The location is fairly convenient as long as you're willing to walk ~10 minutes to get to the T station or a bus. The hosts respond very quickly to all communication before, during, and after.