@Johnathan31 Putting aside the context of the guest feeling rejected for his prurient advance, were his comments in the review truly wrong or unreasonable? His complaints boiled down to:
a) the full nature of the living situations, including number of residents in the home, wasn't previously disclosed
b) he found the room too cluttered with personal stuff (I think it looks cute and quirky, but I see the point)
c) there was a lot more demand for the shared bathroom than expected, which might have compromised the cleanliness at times
d) supposedly he thought the listing advertised a digital lock, though I'm not seeing that.
I don't know how honest these complaints are, but what they have in common is that they're not things guests have good reason to discuss with you during the stay. Guests aren't in any position to ask you to evict your roommates, redesign your room, or add an extra bathroom, so these are the kinds of problems people do keep to themselves until they're reviewing. Even if you had taken the guest up on his Grindr proposition, he might have left the same review in the end.
I have nothing nice to say about guests who feel entitled to bring a procession of strangers into their host's living space will-nilly, but some of this feedback might actually have some value in refining your listing descriptions. Or it might be a reminder to vet your guests more carefully and weed out the ones whose needs aren't a good fit.