I've eaten here at all hours of the day and have never had a bad meal. I do always order breakfast foods though, so I can't say much about their other items. But they do breakfast well!! Their Belgian waffles are great and you can get fruit topping added which is the perfect pair. The fruit topping is an extra charge, and seems a bit high to me for what you get, but it makes the waffles even better so I get it. I usually order eggs over medium which I've come to find is hard get right while eating out. I ended up with over easy, but that seems to happen at every restaurant I order eggs at.
Today I got the bacon, egg and cheese biscuit which was bomb. They really do biscuits right here and give you good deal of cheesy goodness to go with. No gross clear, fatty bacon here, it's the good stuff. And my co-diners all enjoyed their "Bubba" (which I've had and is awesome everytime) and the coconut french toast which I tried and really is good. Doesn't taste overwhelmingly coconutty so you still get a nice crunchy sweet french toast on HUGE, THICK challah bread... so good!
I'd recommend Midnight Diner to any breakfast goer or late night eater. Every time I've been there it's been a good meal and the service is always on point with a friendly smile and quick service.