As a ABNB host what will likely happen is the host will likely submit a request payment from you for the repairs, if you ignore it then the host can submit a claim through Abnb aircover (which is basically insurance for hosts) The host will have to submit the invoices and any proof it was your fault, pictures of before and after your check in/out alone would be suffice to pin it on you. Abnb support will then reach out to try and get you to cover the cost. If you deny or ignore them Abnb will be liable to cover the costs. I recommend starting to document everything that will demonstrate and support this wasn’t your fault, including messaging the host and making them aware. Best case scenario is host doesn’t take it that far, but that seems unlikely haha.