Thanks to both of you! He is from Atlanta, which is about 5 hours from me. Hardly a long term, jet-setting trip. I've asked politely why he was requesting to have mail sent here, as well as the nature of his stay. I doubt I'll get a response.
He has a gov't id verification, and has been on the site for 5 years, but only has one badly worded review from a now nonexistent user. Both profile pictures are of an infant..no adults. Actually, I'm going to be overly cautious and disapprove the stay. I just don't feel right about it.