I have a customer who contacted me through airbnb who wants to stay for 4 months while doing a special project in our area. We have communicated back and forth via email several times and the last I heard from him he was arriving today but he has yet to make a reservation. I'm unsure about what to do if he shows up. I can direct him to the website but I've sent him all that info via email with no response.
There's no way this guest can just "show up" since he does not have your exact address. (Unless you gave it to him - which you should NEVER do.) Airbnb will automatically send the guest your address once they have a confirmed booking.