And the award for official greasy spoon of Vegas goes to: Tiffany's in downtown Vegas.
Why? Because it's hard to find a true greasy spoon diner in Las Vegas. Sure, there are places all over down that can put eggs on a griddle or serve up a greasy burger, but most are tucked away in a strip mall and few, if any, have a old time soda fountain counter for patrons to sit at.
The waitstaff is awesome and attentive. The burgers aren't the greatest thing you'll ever taste, but remember this is a diner. For a diner, they are serving up a quality burger with the just the right ratio of grease and cheese blended into the bun.
If you've got time some morning, take a seat at the counter and have a simple, great breakfast off the griddle. They do eggs right with some crispy bacon. Thumbs up.
[Cash only]