Pretty good. This place ranks a close second out of the top 3 buffets in Vegas. I think Wicked Spoon has the best food and a more hip "cosmopolitan" ambiance. However, Bacchanal has much better food than Wynn buffet (ambiance at Wynn is probably more elegant though).
Overall, I enjoyed my meal. We had a good server who made sure to bring additional sodas and take away our plates. They had crab legs that were halved making the crab meat easy to access. The people behind the counter seemed rather lazy and reluctant to warm the crab legs, but at least they did. I can't remember any particular buffet dish that stands out.
The dining area is quite comfortable, the lighting is just right, and the seats are comfortable too. The buffet looks new, clean, and nice.
If Wicked Spoon wasn't open, this would be the next buffet choice for sure!