Hotels often have the biggest pools, and sometimes an indoor pool in the spa as well. In Saint-Malo and on the Emerald Coast, heated pools range from the Sillon thalasso to the villas of Saint-Lunaire. Here are the 9 hotels I've selected in Saint-Malo and on the Emerald Coast, all rated at least 8/10; I particularly recommend Le Grand Hôtel des Thermes, Castelbrac Hôtel & Spa and Hôtel Le Nouveau Monde.
Each city has its own selection, with a page for each type of accommodation.
Places are ranked from highest to lowest rated. The yellow bubble shows the advertised water temperature, when it's known.
9 places shown
The pool. Large indoor seawater pool at the thalasso centre, according to Staycation and Expedia. The temperature isn't given.
I haven't yet found guest reviews that mention the water temperature. Staycation shows 9.2/10 from 22 reviews.
Guide's tip. Ask about access times for the thalasso centre's pool when you book.
The pool. Heated pool carved into the rock on the cliffside, according to Staycation. The heating period isn't given.
I haven't yet found guest reviews that mention the water temperature. Staycation shows 9.7/10 from 126 reviews.
Guide's tip. It's an open-air pool: ask whether it's open and heated on your dates.
The pool. Seasonal outdoor pool, advertised as heated from April to October.
Guests enjoy the pool in July and say it's well kept. One points out that it's shared with a neighbouring hotel, another that it's a bit far from the annexe. In March 2025, one guest found it still under construction.
Guide's tip. If you're staying in the annexe, ask how far away the pool is.
The pool. Indoor pool with hot tub and hammam, according to Expedia; Staycation mentions a pool with jets.
The hot tub. Hot tub in the spa.
I haven't yet found guest reviews that mention the water temperature. Staycation shows 9.5/10 from 175 reviews.
Guide's tip. Heating isn't specified: ask about the water temperature when you book.
The pool. Indoor pool, listed among the main facilities on Kayak. Heating isn't specified.
Kayak's review summary mentions the pool among the positives, without saying anything about the water temperature.
Guide's tip. Heating isn't specified: ask about the water temperature when you book.
The pool. Indoor pool with sauna and hot tub, according to Expedia. Heating isn't specified.
The hot tub. Hot tub, according to Expedia.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. Heating isn't specified: ask about the water temperature when you book.
The pool. An indoor pool and an outdoor pool, according to Expedia. Staycation mentions the indoor pool for swimming lengths.
I haven't yet found guest reviews that mention the water temperature. Staycation shows 9.7/10 from 338 reviews.
Guide's tip. Heating isn't specified: ask about the water temperature when you book.
The pool. Heated indoor pool with garden views, according to Staycation.
I haven't yet found guest reviews that mention the water temperature.
Guide's tip. A quiet inland option, a few minutes from the beaches of Cancale.
The pool. Heated covered pool according to Staycation, with a hot tub according to Expedia.
The hot tub. Hot tub near the pool, according to Expedia.
I haven't yet found guest reviews that mention the water temperature. Staycation shows 9.2/10 from 142 reviews.
Guide's tip. Handy for a city stopover: the pool is covered, so you can use it in any weather.
These places don't have a confirmed heated pool, but they do have a hot tub: the water is hot all year round. A good way to relax in the warm.
These places were suggested to us directly by their owners. The heated pool is declared by them; they don't yet have enough guest reviews to join the selection.
In my selection, the top-rated is Le Grand Hôtel des Thermes (Thalasso hotel), with 8.8/10 (355 reviews · Expedia). Next come Castelbrac Hôtel & Spa (9.6/10) and Hôtel Le Nouveau Monde (9.4/10).
None of the places selected in Saint-Malo and on the Emerald Coast clearly advertises a pool heated all year round. At Hôtel Le Chatellier, heating is seasonal (april to october). Le Grand Hôtel des Thermes, Hôtel Le Nouveau Monde and Hôtel Barrière Le Grand Hôtel Dinard have an indoor pool, sheltered from the wind. Either way, ask for the heating dates before you book.
None of the places selected in Saint-Malo and on the Emerald Coast gives a precise temperature. Ask the property before booking, especially out of season.
Yes: Hôtel Le Nouveau Monde, Kyriad Prestige Saint-Malo and Hôtel Oceania Saint-Malo also have a hot tub in addition to the heated pool.
The word "heated" on a booking page isn't enough. Every place must have a rating of at least 8/10 (or 4/5) and carries one of these four levels.
Guests mention the heated water in their reviews, with the season when they say so.
A journalist or guide who stayed there describes the heated pool.
The hotel or the platform says so, but I haven't yet found a review that confirms it.
Heating isn't specified, but the water is sheltered from the wind and cold air. Ask for the temperature before you book.
I left these out because guests report water colder than advertised, or because no heating or indoor pool is mentioned.
| Place | What the sources say | Rating | Reason |
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