Night markets are not a natural thing in Siem Reap or even to Cambodia.
In 2007, the Angkor Night Market was set up, a few years later a second market opened, the Noon Night Market.
Both are entirely geared towards tourists and as a result, almost all stalls are souvenir shops.
What is missing are local food stalls – something of which gives night markets a local feel.
A little variety would be nice, but overall, good enough to recommend for a one time visit.
Both night markets are conveniently located a few streets away from the Old Market (open in the day) and the lively Pub Street. The night markets are good places for souvenir shopping, but of course be prepared to do some bargaining. You can just about get any souvenir you want to buy in Siem Reap at this place. The variety and quality of the stuff here seems somewhat better than the old market (Psar Chas) but so is the price.
There are some nice massage places where you can get a shorter on longer massage, and remember to try Dr. Fish massage where small fishes nibble your feet.
Besides the souvenir stalls, both markets have bars and at the back of Angkor Night Market is a small cineplex, where two different movies are shown nightly about the history of Cambodia.