If there's one thing celebrities are good at, it's living the luxe life — especially on vacation. To escape the limelight, Sandra Bullock, Jessica Simpson, and, oh yes, William and Kate have been known to book a stay in only the most luxurious of locations. Whether it be a private villa in Mexico or swanky penthouse in Manhattan, these A-list hotels are not only famous for their celebrity clients, but cutting-edge design, stunning views, and five-star amenities. Take a peek at Hollywood's version of PTO, just don't blame us if you suddenly want to book a vacation . . .