We visited Frenchman's cove several times in July 2013. It's a gorgeous area in Portland, just outside the city of Port Antonio. Because it's in a rain forest region, the hillsides are very lush with trees covered with a variety of orchids, ferns and pothos vines. The beach is triangular shaped since it's a little bay bordered on either side by rocky shoreline. Because the mouth of the bay is narrow, the surf pounds its way onto the beach. A crystal-clear, lazy river gently runs down the mountain into the sea on the left side of the beach and many people prefer to swim and play in it rather than brave the waves. It's also a great place for kids to play since it's relatively shallow. On the beach there are a couple small areas marked by wooden stakes where turtles have laid eggs and you are asked to be careful when you walk.
There is a restaurant on the beach where you can order burgers, fries and cold drinks. Better yet, they have waiters dressed in black pants and white shirts with whom you can place your order, and they will bring the food onto the beach to you. The restaurant has chairs and side tables on the beach so you can comfortably eat, and the waiters will clear away the trash when you're done.
There's a sign out front that states they're closed on Tuesdays, but we went there on Tuesday and everything was open. Not sure what the purpose of the sign is. Apparently it costs $5 to enter the beach because it's private property. However, we stayed at the hotel across the street (Hotel San, San Tropez) and they have an arrangement with the owners so we got a pass each day to go to the beach for free. Overall this is a beautiful little beach in a rain forest setting with a lazy little river flowing through it. Sheer paradise.
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