We have recently stayed at Bamboo House for 2 nights. The site is lovely, quiet and very picturesque on the river, and easy walking distance to the Kwai Bridge.
I agree with the last reviewer re upgrade your room. We had booked to stay in the floating hut on the river but found it rather too basic with mattresses on the floor and a fan (although cheap!). We also felt rather sea sick when boats went past as the cabin rocked considerably. The hut walls were obviously very thin so it meant that you heard the considerable noise from the party boats going past in the evening.
The restaurant area was lovely, with good food and helful staff . The garden area was also very nice and quiet. I would recommend Bamboo House, just not staying in the floating hut!

We stayed in a floating hut on the river with just a fan. For a better experience I strongly suggest you get a hut on land with aircon. The hut rocked constantly which made us sea sick!
The grounds it's self were really lovely and in a good location.
However, We did have to push for a new mosquito net as the one we had had huge holes in, but we did get one in the end which was definitely needed, especially bc we were on the water!
I would recommend but like I said, upgrade for a more comfortable room.

We stayed 2 nights and it was fine. Cheap room on the river (mattress on the floor despite requesting the other type bed off the floor in the photos) with mosquito net, beautiful garden and surroundings. Boats on the river are very noisy and go up regularly late in the evening. I'd stay in a bungalow rather than the raft if visiting again. Ps view of the bridge and the sunrise is pretty cool.