The other Cambodia
After the temple circuit, most travellers bolt for Thailand or Vietnam. The ones who go south instead get a week of river towns, colonial ruins, crab shacks and islands that still close their generators at midnight. This route works in 7-10 days from Phnom Penh.
Phnom Penh to Kampot
Buses and shared vans (Kampot Express, Vireak Buntham) run the 150 km south in about 3-4 hours for $8-10. Kampot announces itself with a riverfront of faded French shophouses and the great brooding hump of Bokor Mountain across the water.
Kampot, 3 days
Kampot is dangerously easy to get stuck in. The town itself asks nothing of you — riverside guesthouses with dorms from $5 and private bungalows from $12, sunset paddleboarding upstream past fireflies, $1.25 iced coffees thick with condensed milk. Rent a scooter ($6-8 a day) for the two classic day trips. First, the pepper farms of the countryside toward the Secret Lake: Kampot pepper is a protected-origin crop the way Champagne is, and tasting fresh green peppercorns straight off the vine at a farm like those around Phnom Vor explains the fuss — tours are usually free, a bag of red pepper about $5. Second, the Bokor Hill Station road, 32 km of perfect switchbacks up into the clouds, where the abandoned French casino and a weird half-empty modern resort share a plateau with sea views to Vietnam.
Kep, 1-2 days
Half an hour east by tuk-tuk or scooter ($8-10 in a remork), Kep was the seaside resort of 1960s Cambodian high society, and the shells of its modernist villas still stand in the jungle behind the shore. The reason to come is lunch: the crab market, a row of shacks on stilts over the water where blue crab goes from tidal pen to wok with Kampot pepper for $7-9 a plate. Walk it off on the 8 km loop trail through Kep National Park ($1 entry), monkeys included, or take the 25-minute boat to Koh Tonsay (Rabbit Island, $10 return) for a preview of island pace.
To the islands
Backtrack to Kampot and catch a van to Sihanoukville (2 hours, $6-8). Be warned: Sihanoukville itself is a casino-building site and not worth a night — time your arrival for a ferry and keep moving. Speed ferries ($22-28 return, 45-60 minutes) leave the Serendipity/autonomous port area for both islands several times daily.
Koh Rong and Koh Rong Sanloem, 4-5 days
Split your time. Koh Rong is the bigger, livelier island: Long Set (4K) Beach is the backpacker base now, with dorms from $7 and beach bungalows from $20-30, a scene that peaks at full-moon-ish parties and empties completely if you walk twenty minutes up the sand. At night, swim — the bioluminescent plankton here is genuinely bright, and kicking through it feels like stirring a sky.
A $5-10 boat hop or ferry connection takes you to Koh Rong Sanloem, the quiet sibling. Saracen Bay is a shallow white crescent of mid-range resorts; walk the jungle path 40 minutes across to Lazy Beach or Sunset Beach for cheaper bungalows, no wifi worth mentioning, and sunsets you will still be describing years later. Bring cash for everything — there are no ATMs on either island.
Season and budget
November to April is dry season and the only reliable window for calm ferry crossings; June to September can be rough and many island places shut. Daily budget: $25-35 on the mainland, $35-45 on the islands. Fly out of Sihanoukville or loop back to Phnom Penh by van in 5 hours.
