Off the radar, coral-fringed Indonesian islands are heaven for beach lovers, divers, and those who don’t need Wi-fi to have some fun

• The Karimunjawa archipelago boasts pristine, near-deserted beaches and clear waters ideal for diving. They are reassuringly hard to reach, as well
• Go beach and island hopping, or walk through mangrove forests, and wind down at the end of the day on the appropriately named Sunset Beach