My wife and I spent 5 nights at JW Marriott Khao Lak Resort & Spa in April, 2024. The room and beach were great. The facility itself is enormous, far more so than I had realized when I booked our stay. It's a Marriott, so expect meals to be priced double (or triple) what you might pay at nearby (and far less fancy) restaurants; indeed, meals were priced a good bit higher than what we had paid at similar or nicer hotels in Seam Reap, Bangkok and Hanoi. Perhaps the absence of high end competition is the reason. In any event, the resort is somewhat isolated (1.25 hours from Phuket and 15 mins from the nearby town) and if you don't mind the scale of the property worth considering.