Let's start off by stating the obvious. This is NOT a Langham hotel. Yes, the Langham group has acqured it, but they have done no rebranding, so, upon arrival, you will find that you are actually staying at the Rawi Warin. There is nothing on the property to suggest that it is a Langham property. The impression I got was that it was going to be completely renovated and restructured. Lord only knows, it needs it. So if you're looking for reviews, I would strongly suggest you look for the Rawi Warin instead.
From the moment we arrived, there were problems. True, none of them were huge, but they were constant. Little things like: tired-looking rooms, no hotel information in the rooms (including no room service menus), half of the wines on the list in the bar and restaurant were unavailable (they claimed that it was difficult to get wine in Thailand...so why is everyone else able to source it?), one of the restaurants was entirely closed, pricing kept changing at the internet cafe, etc., etc., etc.
And then there was the beach. If you fancy a nice dip in the sea, you're going to be sorely disappointed. The shoreline is very rocky (impossible to get into the water in low tide), and the touted "ocean pool" is made of jetty blocks and is small and a long way out. There is also not a single tree on the beach, and frankly, not a beach chair or umbrella to be found. We had to drag our own deck chairs over the rocks in order to get down to the sand.
The chef was arrogant, the food mediocre (a lot of focus on Western - specifically Scandinavian - food) and the service throughout the property was appalling. This included housekeeping, restaurant, internet cafe/library, etc.. It just seemed as if every single little request was too much to ask.
After two nights, we checked out and moved down the road to the Pimalai. While the reception manager seemed concerned that we were leaving (they actually knew before we told them, as they had received a fax from the Pimalai, but made no effort to contact us to discuss our departure), she was quick to point out that we were not getting our money back because we'd booked through Expedia.
Frankly, the money we wrote off in favour of the amazing next 8 days was worth every single penny. Go there instead.