Great Cambodian cuisine. Big portions, and service was pretty good (then again it's hard to mess up service when there is only one other couple in the restaurant). I usually do not know how to pronounce the name of the dishes, so I just point and say the number on the menu, and every thing I've ordered has been delicious.
Plus they have bubble tea! I do like Phnom Penh on W 25th street better but Mekong River takes credit card which is a big plus.