Practical information about Damnoen Saduak Floating Market
This is the only floating market around Bangkok that is open every day. Others are only open on the week-ends. Be careful, the prices of boat tours have skyrocketed, you will often be offered 2,000 THB. Avoid being dropped off by your taxi driver or getting attracted by the operators who are before the market itself, most of them charge very inflated prices. Better to go to the market channel and see the boat tours offered there. They are almost always cheaper.
To go visit Damnoen Saduak Floating Market, you can also book one of the tours above.