If you're looking for a comfortable location to watch the sunsets on White Beach then you can't do much better than 15 Palms - beanbags are put out onto the beach in the afternoon and you've a good selection of comfortable sofas & tables inside.
For food the selection is good with chillis & burgers recommended & certainly very spicy. Drinks are on the pricey side but there's a decent selection of cocktails & the usual beers on offer. The Thai custom of freezing cold red wine is in full swing too.
For chilling out you'll find an excellent selection of music is normally playing & a good pool table available for free usage.
Service leaves a lot to be desired here - during the day its functional but certainly not with a smile and in the evening most of the staff just wander about chatting amongst themselves. A foot up a couple of backsides would do this place the world of good.