Carnac Thalasso and Spa Marin

Carnac Thalasso and Spa Marin sits on the Atlantique coast in Carnac, part of the Quiberon peninsula area, and operates as a destination thalassotherapy center rather than a walk-in day spa. The core offering is seawater-based cure packages, with six treatments listed and a signature program called Cure Signature Thalazur priced from roughly $902 per person. Shorter packages start around $221, so pricing scales with how many days of treatment a guest books.

The facility is built around hydrotherapy: a seawater pool and a hydrotherapy circuit form the backbone of most cures, which lean toward recovery, fitness, slimming and general wellness goals rather than one-off spa treatments. There's no day-pass access here — this is a reservation-only operation, and it's set up for adults, so it's not geared toward family visits.

Hours run 8:30am to 6:30pm most weekdays and Saturday, with a shorter Sunday window of 8am to 12:30pm, which matters for anyone planning check-in or a single treatment slot around a cure schedule. Given the price tier (rated luxury) and the cure-based structure, this reads as a multi-day wellness trip destination tied to the Thalazur hotel group, best suited to visitors already planning time in the Quiberon/Carnac area who want a structured seawater therapy program rather than a quick spa afternoon.