La Bastide en Gascogne

A former monastery beside the hot springs of Barbotan-les-Termes, this hotel draws on the springs for its own spa and carries a Michelin Key. The 25 rooms feel traditionally stylish without trying too hard, and the dining room runs on Michel Guérard's seasonal French menu, so the cooking is a genuine reason to stay rather than an afterthought. The kind of place where the itinerary writes itself: soak, eat, sleep, repeat.