Extra Visitors - Guests of our Guests!

[Zvika1]

after a while my last Experience brought me to stop hosting. cannot trust Airbnb guest.
my last guest that left my apartment in a tarable mass, he stole Arts he stole money he finished all the beer and alcohol and left part of his luggage in the corridor. the damage that he left cost more than 1,000$.
this is more than i earn from this platform.
when i looked at his luggage i found that in the past last month he used to be every day in the restaurants and coffee shops around my apartment.
now i afraid that my girifriend  will come home by herself. i cannot hide my key for the next guest.
and i afraid that he will come back.
before he had to leave he ask me to stay longer that he will have time to clean the apartment, i confer him to stay until evening.
I called him when i came back and saw my apartment, and he laugh at me.
What can i do?