Grand Hyatt Kauai Resort & Spa Rating: 4.5 Pearls
The 46,000-square-foot Anara Spa is hands-down Kauai's biggest and best, with 11 treatment rooms, five couples massage huts in the garden, a sauna, stream room, and whirlpools, lava rock outdoor showers, a 25-yard lap pool, and its own restaurant, Kupono Cafe. The spa's award-winning treatments are inspired by la'au, the Hawaiian tradition of herbal medicine.
Marriott Kauai Resort And Beach Club Rating: 4.0 Pearls
The Marriott has an unbeatable lineup of great features for a midpriced Kauai hotel, the Alexander Day Spa and Salon among them. The spa offers a full menu of massages -- given indoors or in an outdoor cabana -- waxing, body treatments, manicures, and haircuts and styling. Treatment prices are the most reasonable on the island. It's a day spa, though, so there are no facilities beyond the four treatment rooms.
Kauai Beach Resort Rating: 3.5 Pearls
This Hilton's natural beauty and serene atomosphere provide a perfect setting for the Hawaiian Rainforest Spa, which blends traditional Hawaiian healing arts with modern techniques. Its body care, massages, and facial and eye treatments range in price, but are mostly reasonable. It's a small space, though, with only four treatment rooms (none outdoors), a sauna, and two locker rooms.