Khlong San Plaza Markets are located on the west bank of the Chao Phraya River, right next to the Hilton Millenium Hotel.
A small market place which is made up of 2 allay ways which are lined with mostly clothing stalls and loads of street food.
At the front of the markets is a pier on the river with regular public boats stopping by so you can arrive by boat.
There is loads of street food available and at some very reasoble prices. You can get a bowl of Thai noodle soup for 50 baht.
Khlong San Markets are open 24 hours a day 7 days a week - though not all stalls are open 24 hours.
Check out the location of Khlong San Markets in Bangkok