Yes I think you would need at least 3 d2n(I was there for 4D3N) at Kanchanaburi to see many sights.(Good times travel is a good agency.) It is a good peacefull getaway from busy bangkok. I stayed at the peaceful and scenic resotel on the river kwai and absolutely loved the peace and the nature around. I enjoyed siting outside in the mornings enjoying the cool mountain air. If you want some peace and quiet from bangkok this is the place to go.

The bridge over river kwai


Waterfalls in Kanchanburi


My lodgings at the resotel and the perfect place to just rest and relax in the coolness of mountain and river