Just returned from a week at the Sila Evason Hideaway. Although it's not quite on Chaweng Beach, I thought this would be the most appropriate section.

Went around a few of the hotels in Samui, but the Evason was definately the best for romantic couples and honeymooners.

I was also really impressed with the Sala Samui. Cheaper than the Evason, but a great option for those wanting a pool villa.

The Chaweng Rengent was also a good 4 star option.