Brad
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There is a string of beaches along Castle Peak Road southeast of Tuen Mun including Cafeteria Old, Cafeteria New and Golden Beach. It is nicely located for those staying at Gold Coast hotel, not far from the town centre of Tuen Mun. The beach sand is pretty good, plenty of designated swimming area, facilities and a few eateries at the nearby Golden Coast Piazza.
For those staying elsewhere in the city, there are quite a few convenient beaches you can choose from that might be preferable to Golden Beach. However, it is fine to visit here if staying in Tuen Mun or areas in New Territories West.