Les Prés d’Eugenie

A 19th-century palace tucked into a small spa town at the foot of the Pyrénées, this family-owned hotel and spa has been drawing French gourmets for decades on the strength of Michel Guérard's famously low-calorie cuisine, which apparently lets guests lose weight while eating very well. Four-poster beds, antique tapestries, herb gardens, and natural-spring treatments round out the package. The Michelin Guide awarded it 2 Keys.