Came here last weekend for lunch. It was a long line up to dine here, but it actually moves pretty quickly.
I had the American burger and truffle fries. The burger doesn't come with fries, so if you want carbs, the truffle fries are a must. They are truly delicious. The American burger basically comes with cheese, lettuce, tomato, pickle, and onions. Sounds simple, but when it's all put together with the beef patty, it is so damn good. One of the best burgers I have had for a very long time.
Service was pretty good and it doesn't really break your wallet like other places in Vegas. Only downside is that the seats are very low. Nevertheless, I would definitely recommend this place.