Definitely FS Langkawi. I have stayed at around 15 lux resorts in se Asia with kids and this is one of the best. Brilliant kids Club that you will love even if you did not think you wanted or needed one. It is located right behind the family pool (at the beach) and kids can go for 1/2 hour or more and reach you by shouting loudly (though the kids club ladies will call you a more appropriate way, of course). Our son - and we - never wanted kids clubs before coming here, but this one was soooo well done and caring and great, that our son just loved to go there: batik painting, yoga for kids, beach games, sailing, fish feeding, great handicrafts etc. But also if you choose not to use the kids club, the hotel is great for kids: Beach, pool, restaurants etc.