This is the main restaurant in the Four Queens Casino in downtown Las Vegas. I believe the main draw is the $7.99 prime rib (for non-members it's $9.99).
The atmosphere is like a diner. It's not fancy but it works. The service is decent. The food is pretty good but nothing fancy. The prime rib is good for the price but it won't blow you away. The mashed potatoes and gravy were the kind you get in a school or hospital cafeteria. I can see why some wouldn't like it, but I didn't mind it.
This isn't the best place to eat in Vegas, I know. However, it's inexpensive and reliable. The restaurant is open 24 hours.