Puerta La Cruz is not much of a town, but it does have a nice beach. There are better beaches out of town if you want that sort of thing.It is the main ferry port for Margarita which is why most people go there.
Margarita is a beautiful island off the coast in the north east of Venezuela and is advertised here as the best beaches and duty free shopping. I did enjoy the beaches of Juangriego and even though I thin k there are better beaches anc places ist was still a pleasant few days.
Margarita has every kind of climate you can hope for in the tropics even a small cloud forest in the mountains.