Casas Brancas
The epitome of Santorini chic, this sparkling gem of a family-run hotel combines an intimate atmosphere with spectacular views over Búzios's fishing-boat-strewn bay, a first-rate spa, and gourmet restaurant. The building's winding corridors and curling stairwells lead to a plunge pool with magnificent bay views and each of the 32 rooms are unique—many have deep baths, beach views, and private balconies.
Small children are not permitted, but are welcome at the smaller sister hotel, Abracadabara.