If you’re traveling this summer, chances are you’ll need some relief from the heat wherever you go. Consider a destination chill-out at one of the top US spa resorts. Luckily some of the hottest (as in, most popular) destinations also offer travelers respite from the summer heat. Here I’ve highlighted a handful of award-winning Five Star spas in Miami, Las Vegas and Los Angeles that offer cool vibes and special summer deals. Forbes Travel Guide…