I found the "overflowing" part a bit strange - either they had a particularly tiny bin, or that was a helluva party and they actually did a decent job cleaning it up then. Or the owner slightly exaggerated - which I find understandable, cleaning up those disgusting things is no fun. But doesn't Airbnb allow to charge for that? I'm pretty sure I've been charged cleanup fees even though I never left a mess in Airbnb apt.