We spent two nignts there from 23/01-25/01. I'll really love and recommend this hotel to others if there's no that accident happened during our stays. I'll describe below.
Amazing pool sitting area, really impresive. Lovely and mordern room. Plunge pool is swimmable.
We were feeling very good when arrived at the hotel, and just wanted to hang out and walk around the hotel. At the time when i wanted to close the door, my little girl pinched her fingure at the door. She was only 3 years old, standing at the backside of me, the door was quite heavy i even didn't realize when her fingure was between the door and the wall. It was hurted really badly and terrible, one fingure and nail was broken with bleeding, I scared and called 0 for the first aid. Staff came in 10-15 minutes, gave simple clean and bing up, advised that will come again next morning. My girl was keepping crying and finally went to asleep. We were so worried about whether the wound will be infectted. Of course, she could not swim from that time which she was expecting to. It has to be prevented from water.
Then it went to the next day, we were waiting for someone to call at or ask about the wound, but no body. We then went to the lobby and found the staff for assistance, they had no idea about this and just provided us iodine and blaster, we handled it ourselves. For the following time, we went to the drug store and bourght necessary things, and made clean/bind up all ourselves. During our stay, nobody cared about this and asked about this again. Only one staff at the front door asked what happed to her fingure when seeing it was binded.

Okey, this unexpected accident happened mainly due to ourselves, but why not the hotel and staff concerning it a little more? We had high expectations with W, just wanted to feel about that we were import, or even feel warm at the place which was not our home. Our holiday were destructed from then on, it is a so beautiful island, full of water, but the kid couldn't touch the water...what a pity!
Now,the fingure is still not recoverd. The whole old nail is going to drop, and new nail is still growing.

Anyway, it is a cool hotel. I still like it, and if can improve the service and such aspects, i will be definitely come back.

Being a W veteran, I thought this retreat was truly that..... A Retreat.
We had an Ocean View room with an amazing lap pool and a very cool outside shower. Service Standards were good.
We easily made friends with our server "O" at Sip on the beach. He offered exceptional service all day long and served us the best lunch we had at the resort. The private beach is one of the nicest I've ever been to.
Definitely plan on a romantic late dinner at Namu, cozy up to the sushi bar and make friends with the chef's. Do not miss out on their deserts!
My only complaint is that I expected a different level of amenities in the room, being a "Retreat" I would think they would have up-scaled them not provide the same old lotions and potions.

This trip was by far the most amazing trip to thailand i have ever experienced mostly because of the hotel. The food was absolutely divine as well as the cocktails and the service by all the staff. Highly recommended!

W Samui is very funky and cool. The villas are well designed and although there is little pool privacy when staying up on the hill, the beach side villas are extremely private. It is nice to stay somewhere where the private pool is actually swimmable rather than just a plunge pool, which seems the norm these days. Breakfast at the Kitchen Table is phenomenal as well as Namu serving excellent Japanese food. The twice cook pork melts in your mouth and the salmon is sea fresh. Its fantastic to see a Japanese restaurant of this caliber on Koh Samui. Naturally the W brand is a bit cutting edge and maybe a bit too funky and modern for an older crowd although the service is excellent. Price wise a bit on the expensive side, but that what you expect to pay for the W standard.