I recently stayed at the Intercontinental Hotel on Michigan Ave. I decided to try dinner at Zest, the hotel's restaurant, mainly because I was intrigued by their four course prix-fixe menu, which apparently changes monthly. My dinner was excellent, especially the first course -- duck rillettes on toasted brioche -- and the third --saddle of rabbit and lamb, grilled risotto, duck foie gras. It cost 49 bucks (not including tax or tip) and was worth every penny. In fact, it was one of the best meals I've ever had for that price, and better than quite a few that cost more.
The rest of the dinner menu isn't as fancy: aside from steaks, only one entree costs more than twenty bucks. And the fixed-price menu isn't offered for lunch. However, they make a mean onion soup. And breakfast is good, too, albeit expensive (there's a breakfast buffet, but I passed it up).
There's no street entrance; you have to go through the hotel. Nor is there an exterior sign, though there are signs for their wine bar Eno. In fact, there's almost nothing to indicate to passers-by that Zest exists.
Zest
2nd floor, Intercontinental Hotel
505 N. Michigan Ave.
312 321-8790