I was there in February for 3 weeks, Chaweng is a busy resort, on occasions a lot of rubbish seaweed was washed ashore, what time of year will you be there? There are only certain points you can get public access to the beach. The access I am aware of is near the Sala Beach Club and Centara Reserve Hotel. It might be worth going to a beach nearer the port, I liked Choeng Mon beach better than Chaweng, we also visited Chi beach club, the beach was also lovely, Food and drinks at the beach club were excellent but expensive for Thailand. Can’t wait to go back in 2025!