There is no way to boost your chances w/ Priceline for a certain hotel. It is truly the luck of the draw. At Hotwire, the betterbidding.com website will help you figure out the amenities listed, but I've seen them be wrong too!!!
W/ priceline it's always a chance. You got to be willing to accept whatever they give you. Most of the resort levels are really nice, and I wouldn't be disappointed with any of them. But if your heart is really set on 1 hotel, don't try priceline.