I would not recommend this place to anyone. I've tried several buffets on the strip and you can definitely get better for the same price, maybe a couple dollars more.
Roundtable tries to go with the renaissance them, but I think it's lacking a theme as nice as the other resorts. I think it could look fun with some work. The food was mainly bad american food such as corndogs, pizza, and chicken strips.
Personally, I would choose to eat at the food court in the hotel before eating at the buffet. There are so many resorts close by that have much better buffets with better selections.