@Jay235, Could be a perv but its doubtful for reasons others have given and more. Your situation leaves me with as many questions as answers, does this guy have good prior reviews? Is this a shared Bathroom you thought he might have been looking for? Are you sure your ready for what Airbnb guests from all over the country and world will throw at you without a minutes notice and can you smile and laugh it off when you might feel like frowning or even yelling (cause thats probably gonna happen).
My wife and I have had hundreds of bookings and a thousand or more guests over a few years and more than my share of guests that ended up where they were not supposed to be including a cute young woman in a wee skirt obviously a bit tipsy and disoriented after returning from a wedding reception waking me up bedside cause she couldn't find her space (my wife was doing an overnight eldercare), that was a ginger moment, I did an amazingly effective blanket wrap and guided her to her suite tout suite!!!!!! Luckily it was a chillier night so all she saw was the surprised expression on my face not the full Monty! Another young lady in our downstairs suite who couldn't read or speak English somehow ended up in a suites bathroom the next floor up and had to go through 2 gates, our kitchen, up a set of stairs and into a completely separate 3 bedroom suite to get to it! The young man in residence at the time was astonished to see a lady wrapped in a towel exiting his private bathroom needless to say!
I should have learned back in 1983 in my nearly newly issued private barracks room @ Fort Riley KS when I woke up with a humongous hangover and an exceptionally large young South American lady who spoke very little English sharing my very tiny Army Bunk that I had no Idea who she was or where she came from! After waking her and sneaking her out the side door then shepparding her back downtown where she was picked up a few hours earlier, I did a little investigating and found out one of my skumbag cohorts in a shared room down the hallway got a conscience at 0400 hundred hours and realized his beer goggles were not going to serve him in the morning well so he locked her out in the hallway when she went to use the shared men's bathroom, when she realized what happened, she started searching for any open door and found my door unlocked and made herself at home (lucky me)!
We have found a number of tricks over the years to try to minimize these things from happening like adding privacy locks, signs on doors and more extensive descriptions in our listings. I suggest you do the same, stay well, JR