Sai Kaew Beach Sai Kaew Beach, Koh Samet, a white sandy beach about 800 meters long, is the most beautiful beach on the island. beach that never sleeps There are activities to do all day, suitable for lonely people. There are many amenities such as restaurants, accommodation, resorts, water activities, kayaking, sunbathing. At night, this beach is bustling with people. Bars If you want privacy, you have to walk to the end of the island.