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Built around a deep-water port, Sihanoukville is a large industrial city that has succumbed to the dubious allure of cheap travel — backpackers, casinos and budget hotels abound. However, it’s a convenient doorway to the nearby islands of the Koh Rong Archipelago.

This string of islands, stretched out across the mouth of the Bay of Kompong Som, is named after the largest island in the chain. Even in an area known for its beaches, Koh Rong stands out. The silky, sugar-fine beaches stretch for miles and feathery palm fronds cast dappled shade on the sand, which slopes gently down into brilliantly blue waters.

There are a number of beach options. Some are mainstream destinations geared around the nightlife, such as the raucous Koh Touch, near the ferry terminal. On others, like Long Set Beach, you’ll find deserted stretches where all you can hear is the restful sound of the ocean, punctuated by the song of a few crickets.

Located a short ferry ride from Sihanoukville, Koh Rong also offers options beyond the beach. The waters support schools of iridescent fish, bright corals, delicate seahorses and cartoonish nudibranchs, which you can admire on a snorkel or dive. Equipment rentals are available on the island. Many snorkeling trips also include an after-dark boat trip to see the glowing plankton that limns the waves with an eerie luminescence. You can visit nearby islands by longboat, trying your hand at the local fishing techniques.

Hotels here range from inexpensive to indulgent. We suggest the Royal Sands, which offers beachside private bungalows and a spa, as well as an infinity pool.

Just off the northeast coast of Koh Rong, Song Saa is a pair of tiny private islands linked by a footbridge. The name is Khmer for ‘the sweethearts’. On the southerly island, you’ll find sybaritic bungalows decorated with driftwood furniture and upcycled wood, some on stilts over clear turquoise waters.

Just a brief walk away, across a curved wooden bridge, is a nature reserve. Here, you can spot kingfishers, sea eagles and Malaysian plovers with a trained member of the hotel’s conservation team.

Best time to visit Sihanoukville

We suggest visiting Sihanoukville between November and April, when the skies are blue and the humidity is low. Temperatures begin at a comfortable 77°F (25°C) and rise steadily until they reach a sizzling 91°F (33°C) by April.