La Réserve Hotel & Spa, Paris, France
This 19th-century Parisian-chic property, moments from the Champs-Elysées and in strolling distance of the Eiffel Tower, has a gorgeously grown-up vibe that feels more like a sumptuous private home or members' club.
For a boutique hotel, the public areas are fabulous: a lounge, garden patio, France's first Nescens spa with a gorgeous 16-metre candlelit pool, and the pinnacle of gastronomy – the two-Michelin-starred Le Gabriel.