The site is sort of up:

www.marriott.com/usmbr

There are no pictures nor is one able to book it just yet. I'm heading to Thailand in November & will be in Surat Thani for about 4 days & was thinking about doing a trip up to Samui for 3-4 days and staying at this hotel. However, I may just go to Koh Phangan & stay at Field Paradise Village where you can get a bare bones tree house for about $6 US per night (and no hot water in the showers - but it is a tree house!).

If anyone does go to this hotel between now & November, please, please, post a trip report. I'm very interested. It's in Lamai which is a nicer part of the island. I'm thinking I may make reservations and just hold them & cancel later if need be.