I went to a French comfort-food restaurant in Chicago with family a few years back, but I can’t remember the name. I remember it being downtown, and not too pricey compared to Magnificent Mile standards. It had a square dining room, not long and narrow. I wish I could remember the name. The rabbit was excellent.
Otherwise, I’d have to say Club Lucky for reliably good Italian food for reasonable prices. It can be kind of crowded on the weekends, but it’s been a mainstay for us whenever we visit the 'rents.