Part of the Light Groups (owners of Haze, the Bank, Jet, Fix, Stack etc) contemporary and trendy casino side restaurants and bars. That said, eating at Union is meant to be part of the Vegas lifestyle that they try to sell the 30 something baller who demands an up end café to serving simple food. Its not for everyone.
Décor is contemporary. The noise from the casino is loud and adds energy to the place but you will feel like you're on display if you take a table closest to the casino floor.
The food is simple and well prepared but the prices are out of line with the overall experience. The crispy rock shrimp served with a creamy ponzu sauce and chili sauce is delicious. Perfectly cooked morsels of sweet shrimp. The Chilean sea bass is by far the best main. Very succulent and moist served with a delicious rissoto. A winner.
I have not tried any of the steaks that dominate the menu. They are comparably priced to top tier Vegas steak houses. I would rather save the cash and enjoy a steak elsewhere.
Decent wine list. Prices are high.
Vegas has so many world class restaurants so unless your balling out of control in the millionaires club, Union offers little value for your money