It's ok. Nothing special. Food is AOK. And service is AOK. (The hostess are really sweet and hospitable though! One girl read me their whole menu on the phone!)
One tip: DO NOT ORDER THE CHICKEN POT PIE! Marie Callendar's and even frozen foods I have eaten do it better.
It's the same food/kitchen as room service at the Cosmo. Here are a couple of additional things to know about that. The price varies from the room to the restaurant by a few bucks and you'd be surprised to know that the prices are not necessarily cheaper at the restaurant than room service.