Phnom Penh’s Night Market on the riverfront is aimed towards visitors and tourists, offering a wide and varied selection of Cambodian handicrafts silks, art, cloths and souvenirs. Interestingly thought is that it is probably more popular among Khmers than foreigners.
The market has a more relaxing, cooler and festive atmosphere than a typical local market in Phnom Penh. In the middle of the market is a big stage where they most of the time have some kind of performance or concert. 
There is also a picnic area behind the stage where you can sit down and enjoy the food from the food stands and listen to music.
The Night Market is opened every Friday, Saturday and Sunday evening from 5 pm to midnight.
More detail about address, please click on Night Market venue.