When it comes to beaches in Cambodia, Sarasen beach at Rong Sanleoum is the ultimate choice. The sand is white and the water is crystal clear, making you feel like you're in paradise. However, it can be a bit pricey since food and supplies are imported from the mainland. It takes about 25 minutes by speedboat from Sihanouk Ville town, but it's definitely worth it to escape the hustle and bustle of the city.