Airbnb is not the renter, their only a short term rental market place, no matter how they try to sell otherwise read the TOS and understand they are not property managers and you have not assigned them any legal authority. You need to interact with your potential rental and send them an application and rental agreement. OK, you had to agree to let Airbnb take control of money collection so they can insure they get theirs or they boot you to the back of 100's of ads. Why i left the market place but then I don't rent by the night either and never will rent to transient renters to risky!