I come here every time I'm in Vegas (from LA) , and it's hands-down the best Serbian food on the west coast! I recommend the Pljeskavica (a Serbian kebab-burger) with Kajmak, it's large and delicious. Serbs do meat right.
The service is good and polite and did not wait too long for the food.
P.S. not sure why people are mentioning Ukrainian, there is nothing ukrainian in this restaurant.