HI Emily,
oh yuk, that's awful. Sorry you had that experience.
Maybe let your neighbours know your phone number so they can ring and tell you? You could tell Neighbours your House Rules so they know what isn't allowed.
Then you can tell Guest to leave as he has violated the House Rules.
And definitely give him the thumbs down in the review part (in the Review, where it says 'would you recommend this Guest? no-one will see this) plus an honest review.
I now have one of my instant booking criteria as 'must be recommended by other Hosts' so people like this can't book.
As one of the other long-time Hosts said on a post 'they will contact you and try to sweet-talk you into letting them book" if they have no good reviews, or the thumbs down.
I decline them now, with the reason "they don't match my booking criteria", if no reviews, yet they say have stayed in Airbnb's before, and have been listed on Airbnb for a while.
Red flag!
My main trouble here comes from Smokers, who proceed to make the place smell hideous. So I now have a "I am accepting bookings from non-smokers only now" in 2 places on my site.
Still had one slip in the other day, amazingly. So now I ask upon booking, get them to confirm in writing they are non-smokers.
I read up on it on AIrbnb and we can decline smokers .
I love travelling in Hungary and have stayed in 3 Airbnb's while there with my Daughter.