Bang Nam Phueng Floating Market is only open on weekends. This is the another attraction in Bang Krachao
area. Like all so-called floating markets in the immediate outskirts of Bangkok, this is more a market next to a canal that a real floating market. But it's still a nice place to go especially for eating and the part close to the canal is nice.
I suggest you take your lunch break here when you come visit Bang Krachao, the green heart of Bangkok, on a Saturday or Sunday. The food is good and cheap !