The Airbnb looks very nice on the pictures, but I don’t recommend that apartment when you travel with children. First there are a lot of dangerous stairs without any security and an open gallery with an very open railing! This is by the way the bedroom with the four beds.
Otherwise when you don’t travel with kids, is that apartment ok.
I hope the Hoster can fix the problem with the bad smell! We had to sleep with open widows because of that, which means you hear the noisy street.