The 4th season of The White Lotus will be filmed at the Château de la Messardière hotel overlooking Pampelonne Bay in Saint-Tropez.

It's good that the series is returning to a proper authentic location on the Côte d'Azur, where it belongs.
The seasons in Hawaii and Thailand visually paled in comparison to the season in Sicily.

Also, Helena Bonham Carter has been announced for the season — she's the one who played Marla Singer in Fight Club, Bellatrix Lestrange in Harry Potter, or Princess Margaret in The Crown (depending on which generation you're from).

P.S.
I attached the hotel's rate calendar for August-September; I don't know what's behind the peak of €12,000 per night on September 26, possibly the Côte d'Azur regatta Les Voiles de Saint Tropez 2026, but that's not certain.
The prices are impressive even without that, and after the series, the hotel's popularity will increase along with the prices.