I own in a very small condo building. Half of the units in the building are rented out, much to the chagrin to those of us who own and reside in the building. A year or so ago, I noticed various strangers coming and going with suitcases into the unit next to mine (which happened to be rented out). One evening as I was exiting my unit I ran into two such Air BnB customers who were entering that particular unit, and asked how which website they used. They confirmed Air BnB. We already had language in our condo rules and regulations about temporary renters, but we have since updated them specifically spelling out about renting through various websites such as Air BnB. Needless to say the owner of that unit was fined and the tenant thrown out. Upon renting, Tenant's are supposed to sign and acknowledge that they've read and understood our rules and regulations.
I am not comfortable seeing an escort or massuer in a property they're staying at through those kind of sites, and have turned down seeing guys because of that.
Being on the other end of having a lot of strangers coming and going next door, I find it a little troublesome to say the least.