Koh Rong

Koh Rong is the star of the islands off Sihanoukville. With white sand beaches and turquoise waters, Koh Rong is a dreamy tropical paradise and one of the loveliest islands in the Gulf of Thailand. Apart from sunning on the miles of white sand, there's also diving, snorkelling and trekking paths for visitors.
Although Koh Rong has long had bungalows managed by a diving shop in town, at the end of 2010 and early 2011 the number of bungalows on the island multiplied, and now eight places offer accommodation on the island. The new bungalows have definitely put Koh Rong on the map — the name is on the lips of every backpacker in town and two daily boats chug over to the opposite side of the 78 kilometre-square island.
Despite this, and the major development project that is said to be in the works, Koh Rong is still remarkably pristine and undeveloped — there are no roads, all transport is by boat and the only electricity is from generators. That's certain to change, so try to visit Koh Rong before the hordes arrive.