The Krystal is very nice and very gringo-yuppie, if that is your taste. There is one huge pool and a medium sized pool in the midlle of the complex. There is a huge palapa style restaurant with mediocre hotel food.
You will, however, miss out on any sort of "Mexican" culture and the true beauty of what may be the most beautiful coastal cities in all of Mexico. Or so it seems to me. Much of the beauty in Vallarta is the cobblestone streets, beautiful restaurants and excellent cuisine, if you know where to go that is.