I recently stayed at the Westin Puerto Vallarta (mid June 2003). Nice hotel but bad beach and dirty pool. The beach had a lot of debri washing ashore. I assume because it is on a bay and all of the garbage does not go out into the ocean. Also, the beach was maybe only 10 to 15 yards deep. Maybe the hurricane had something to do with it.
The pool had green mold all over it. Looks like my pool in the winter when neglected. They did have workers one morning scubbing it. But they were just moving the mold around. It is a big pool, but it needed to be shocked and the mold killer chemical should be applied.
I was there on business, by myself, so I had no intentions of going swimming.
The food was pretty good though. I got the most basic room at about $98 per night, was upgraded to a room with jacuzzi on the balcony on the upper floors with a free substantial breakfast buffet. They had grass tennis courts, and I got a good reasonable massage.
I would take my family if they fox the beach and clean the pool.