John Ascuaga's Nugget has a wide variety of restaurants and facilities available for your use. I love the all-night diner called Rosie's. Their menu is great.
I recently was a hotel guest at The Nugget, too, and the rooms are clean and nice. The pool at The Nugget is EXTREMELY nice. One of the nicest casino/hotel pools in the city, I think. It has a really neat waterfall and several hot tubs.
I recommend the nugget for dinner, a night out, or a night away. They also have great shows, so check them out.