There are also plenty of shops offering laundry services, which charge around US$ 3 per kilogram. Usually, they don't write down numbers of clothes being laundered on your receipt but the weight. So, if you are worried about losing your clothes or for whatever reason, a simple rule: don't laundry your best ones.
Normally it takes about one day, while during rainy days they may need two days before your clothes are ready. Once you collect your clothes, they will be nicely folded and wrapped in a clear plastic bag.
Locations are considerably well spread in Siem Reap, normally around small guesthouses and along Sivutha Boulevard. Opening hours are around 10am till midnight.