Bathed in a neutral beige-and-white palate, the 10,000-square-foot Guerlain Spa is its own calming getaway within the already blissful Regent Bal Harbour. And you can forget about those spas that try to soothe you with sounds of the ocean—Guerlain is the real deal, thanks to its views of the water from the treatment suites. Ease your jet lag with a specially tailored jet-lag regimen or with a foot rubdown in the serene, white-curtain-clad Foot Therapy Lounge, and follow it up with a makeup application to get you ready for Miami Beach nightlife. If your body needs a little love the next morning, detox with a facial or a “Harmonising” massage—our favorite is the 4-Hand Impériale Massage, which includes two therapists and a whole lot of relaxation.