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Bathhouse Flatiron 14 West 22nd Street New York, NY 10010 (646) 891 - 1315 FLATIRON@ABATHHOUSE.COM Book Now Day Pass, Starts at $39 Prices vary based on the day and time you choose. Browse Prices Flatiron Amenities 6 Thermal Pools Bathhouse Flatiron features six thermal pools: two hot pools (104°F), two cold pools (45°F and 50°F), neutral pool (98°F) and salt pool (98°F). Banya Powered by a gas furnace, the banya runs between 185°F and 195°F.