Holsteins is a good place inside of the Cosmopolitan hotel. They serve milkshakes with or without alcohol in them. I've had the drunken monkey shake and the birthday cake shake and they are both really good.
For appetizers I've had the buffalo chicken dip and the surf and turf quesadilla. But on my last visit the surf and turf quesadilla was no longer on the menu. The lobster mac and cheese is really good too.
My favorite burger here is the Rising Sun. It's so good and topped with teriyaki sauce, crispy sweet potato strings and tempura avocado. The flavors come together nicely. I've also tried the Captain Hook sandwich which is salmon with a remoulade sauce and that is really good too. Both the fries and onion rings here are good.
Good atmosphere and great food. Service can be a little slow but they are always busy so it's understandable.