With a 30-acre footprint, the new 313-room Ritz-Carlton, Bali stations its reception and villas with private pools on a cliff overlooking the sea, with more suites, pools and a 14-treatment-room spa at sea level. Catering to a broad demographic range, the resort features two wedding chapels and a children’s club with a private pool. Among five dining choices, the Indonesian entry includes a cooking school. And through partnerships with local artisans, culturally curious guests can visit the ateliers of lace makers, furniture designers, the couturier Sebastian Gunawan and the shoemaker Niluh Djelantik. Rooms from $480 Some 250 miles southeast of Bali, on the island of Sumba, Nihiwatu harnesses luxury tourism to philanthropy, directing profits from the remote resort to a foundation funding education and health initiatives for the islanders. Chris Burch, an American entrepreneur, and James McBride, a South African-born hotelier, bought the retreat in 2012, and reopened it last year. This spring they plan to add 12 more thatched-roofed villas, for a total of 33, and remote spa treatment huts that guests can hike to on a full-day outing. The Hawaiian-born big-wave surfer Mark Healey oversees the surf school, limiting riders to 10 a day on its cult-status left-hand break. The resort’s 580 acres encompass a 1.5-mile private beach and jungle trails to waterfalls and villages. Rates from $495 a person, double occupancy, all-inclusive.