Koh Jum (koh Pud)

will be visiting here for few days just after christmas,can anybody reccommend any particular beach/resort/accommodation?

im looking for some where as quiet and chilled as possible with a decent beach to relax on and a nice sea to swim in..

ive heard a few reports that some of the beaches are quite rocky and not suitable for swimming,so im hoping to avoid these if possible.

andaman beach sounds ideal?ivedone a fair amount of research includin here amongst other places http://www.kohjumonline.com/beaches.html

if theres no where suited to me on this island doesa nybody have any other reccommended islands in close proximity due to my limited timescale,im looking at 3-4 days chilling out/beach time (i land in phuket sunday 27th dec just before midday and fly back to bangkok around 4pm thursday 31st dec)

any help appreciated,thanks