This is a really cute hidden gem. At least, "hidden" in that it's tucked away far from my usual stomping grounds.
Came here for my dad's birthday brunch. The diner is small but brightly lit. The atmosphere reminded me more of restaurants I visited in Toronto, than of Madison, so it was almost like a pleasant little vacation.
Coffee was great, as others have mentioned. Their omelettes are good, but nothing extraordinary.
I recommend this restaurant for breakfast/brunch/lunch. It's cozy and good for groups of two.