Absolutely right
Ricktoronto is right about the ratings, they don't even have a rating system in Ontario anymore, maybe even the rest of Canada as well. (Sorry, I haven't worked in the travel agency business for awhile, so I am not completely up to speed) The last resort I worked at here in Canada, although it had a 5 star rating for 13 consecutive years, is only allowed to market it as a "recommended" status resort which means it meets all the criteria of the new system.
Also, in my experience, whether it be Mexico, Cuba, Venezuela or any Caribbean destination, I would definitely rely on a travel agents report or a handful of reviews (as everyone has different ideas of what they want in a resort) whether it is a 2 star or a 5 star. Travel agents do a fair bit of fam trips for this exact purpose so they can give you first hand knowledge of the resort and location. When I did my fam trip to the DR, we toured each and every hotel in Playa Dorada, POP and Cofresi and had to prepare a full report, along with pics, stats and personal feelings about each and everyone of them so that everyone in the office was knowledgable.
I don't know if this is helpful to you, or if you have booked already, but just remember, booking a holiday is like any other major purchase you would make, whether buying a stereo system, a new TV etc, wouldn't you research a little first to get the best bang for your buck?
Good luck and enjoy your trip.
Marlie