The Ritz-Carlton Spa, San Juan. Popular treatments at this posh spa include stone therapy, the balancing lomilomi massage, based on a Hawaiian ritual mimicking waves, and the Ritz-Carlton's signature facial. You can also schedule a private yoga class, weight training session, and salsa lessons. 6961 Av. de los Gobernadores, Isla Verde, San Juan, 00979. 787/253–4131. www.ritzcarlton.com.