I live in the LA area and whenever I'm in Vegas I make sure to stop here for some Serbian food! Is it 100% authentic? No, but good luck getting that outside of Chicago...it's as authentic as you're going to get in the western United States and I'm a big fan! I love their Kara?or?eva nicla and burek...the ?evapi are OK, not as good as Aroma Cafe in LA but still good. My girlfriend (not Serbian) has had the gove?i gula and sarma and she seemed to like both...I tried both and they were good, though not as good as my mom's and deda's cooking :D The service has been great here every time I've gone, MUCH better than my one experience at the other Serbian establishment in Vegas, Cafe Derbi. On that note, all the smoke is a legitimate concern and not for everybody, but having been to Serbia many times and not being a smoker myself I guess you could say I'm used to it...still, this place is WAY more ventilated than Derbi, even if it's smaller, so if you're worried about smoke while you're eating (and rightfully so) this is the better option.
I love me some Prince...I'll be back next time I'm in Vegas! Vidimo se!!! :D