I came to the conclusion that a good portion of the reviews on the travel sites for resorts in Mexico are probably written by guys that work for the resorts in Mexico.
You could find a glowing review or a terrible review of any resort. And so many that the reviews become meaningless.
OTOH, I didn't buy a particular electronic gadget a while back because one of the reviewers pointed out that it didn't do something that he thought it would. Something I also thought it did and should have known that it did not do