Koh Tonsay is a 30 minute boat trip from Kep beach. Spend the morning (or day) relaxing, swimming and sun bathing.
The island is usually very quiet – there are some cheaper huts on the beach and but not a lot else. You can get cold drinks and simple snacks.
A seafood barbeque lunch is prepared for you and then there is time to sleep it off on the sand. The main beautiful white sand beach is shallow and the sea bottom has a long gradual slope, making it excellent for swimming.
Head back to Kep in the mid-afternoon or whenever you are ready.