Kosa is a 4,500 sq ft Ayurvedic spa on the mezzanine of the historic Garver Feed Mill. Its three-hour Community Sauna retreats ($55 plus gratuity, 18+) include a hot stone sauna, an aromatherapy hydrotherapy steam room, a cold rain shower, robes and the Sanctuary Lounge with Ayurvedic teas; swimsuits are required in community sessions. Private steam and sauna retreats and massages, facials and Ayurvedic treatments are also offered. Closed Mondays.