This morning a guest, a local, inquired to book my apartment to arrive later today - the same day. Upon review of his profile I noticed he received a negative review last month from another local Host citing a party being thrown and damage. I directly inquired about this to the guest and explained by concern detailing how sensitive to noise my neighbors are and asking him to confirm he read all my very strict house rules. He provided a reasonable explaination and was actually quite nice. He told me he was working until 7pm and would contact me upon his arrive. 5:30 I get a message from him saying he came by to pick up the keys from the lock box but it was empty. Alarmed I informed him I placed the key in the lock box myself that morning, then immeidately walked over to look myself. When I arrive, there was a girl standing near the lock box with a suit case - she said - are you brining me the key to let me in? I asked her who she was and said the guest explictly told me three time it would only be him in the apartment. I told her she needed to wait outside. I went in alone and proceeded to call Airbnb. It took 45 mins to get a rep on the phone, while waiting the guest began to text me on my personal number trying to explain that this girl is his girlfriend and he didn't think he had to tell me about her, that she was tired, is now waiting in the building lobby, and for me to let her into the apartment. Finally, I spoke with an Airbnb rep explaining how I no longer felt comfortable hosting this guest because 1 - his previous review, 2 - him lying multiple times about the number of guests, and 3 - now the keys missing from the lock box. Airbnb cancelled his reservation, full refund to him (thats bs, but whatever), and are reimbursing me for the full cost of replacing the lock and dead bolt tonight. What are your thoughts? Did I handle this properly? Have you experienced a similar situation?