Royal Hainaut.

Housed in a meticulously restored 18th-century complex that once served as a hospital under Louis XV, Royal Hainaut is a rare exercise in architectural preservation. The scale is immediately felt in the common areas, where massive bluestone vaulted ceilings and Gothic elements are paired with contemporary baroque furnishings. The 79 rooms and suites take full advantage of the building’s historic bones, often featuring duplex layouts and high ceilings. Perhaps the most striking feature is the subterranean spa; located in the building's former cellars, it centers around a vast heated indoor pool framed by stone pillars. Dining options are split between La Storia, an upscale Italian kitchen, and La Galerie, a brasserie serving regional French classics. It is a grand, monumental base for exploring the Hauts-de-France, offering a sense of history that few modern resorts can replicate.