Koh Rong Sanloem is a relatively undeveloped island known for its serene beaches, clear waters, and laid-back atmosphere. Popular activities include swimming, sunbathing, snorkeling, diving, and jungle trekking. Accessibility can be limited, with boat transfers being the primary mode of transport to the island and between different bays; some areas are only accessible by boat or foot. Both solo and guided visits are viable, depending on your comfort level with independent travel; guided tours are available for activities like snorkeling and jungle trekking. The dry season (November to May) is the best time to visit, as the rainy season (June to October) can bring heavy downpours and rough seas. Budget travelers can expect to spend around $20-50 per day, while those seeking more comfort might spend $50-100+. A typical visit duration is 3-5 days to fully enjoy the island's offerings. Note that electricity can be limited in certain areas, and ATMs are not widely available, so it's advisable to bring enough cash.