Nungwi Beach
Riu Palace Zanzibar
Riu's big five-star all-inclusive, built for people who want the pool, the spa, the watersports and three meals a day handled without leaving the grounds. It's a resort machine, not a boutique hideaway, and at about US$605 a night it's priced to match. Guests rate it 8.9/10 over more than 1,200 stays.