Sweetwater Eco Spa

Sweetwater Eco Spa sits in a redwood building on Ukiah Street in the village of Mendocino, next door to Luna Trattoria. It's the spa arm of the nearby Sweetwater Inn, and the setup is simple: private outdoor redwood hot tubs, an infrared sauna, a traditional cedarwood sauna, and a menu of massage treatments.

Most of what happens here revolves around soaking and sweating rather than a full treatment menu. The hot tubs are private rather than communal, which suits couples or small groups who want quiet time rather than a social bathhouse scene. Inn guests get complimentary access to the tubs and saunas, generally from late morning into the evening, with slightly shorter winter hours, plus discounted massage rates. Day passes are also offered for people not staying at the inn, though access has historically leaned toward hotel guests, so it's worth confirming current policy before planning a visit.

The spa is part of a small cluster of Sweetwater-branded properties along the Mendocino coast, including the original inn a few blocks away and a handful of vacation rentals. The overall feel, based on guest accounts, is rustic and low-key rather than polished or resort-style, with a village location that puts you within walking distance of local shops and restaurants.

If you're coming for the redwood hot tubs and saunas specifically, call ahead to confirm hours and whether a day pass is bookable on the day you want, since hours shift seasonally and non-guest access isn't guaranteed.