There are seven more recent reviews (all 5 star) after that review, that would be one indicator although I do not like/trust that most of them only have one contribution... I haven’t stayed there in over a year myself but the only bugs we had to deal with back then were the usual mosquitoes.
I personally would book it if I was interested today although we prefer to stay at Casa Mexicanas or the Hotel Cozumel when we are diving with Aldora for easier access to town and the included breakfast(s). It sounds like this person had a very bad experience and developed quite a bit of bad blood between himself and the staff when staying there, that is very unfortunate/sad to hear/not wished upon anyone but I don’t think I would totally write off the entire Villa because of it.