NY Hound Visiting Chicago
Avenues is closed this month. (The Lobby Restaurant is using its space while its own is being remodeled.) http://chicago.peninsula.com
Tru ( www.trurestaurant.com ) is the best high-end place in the immediate vicinity. NoMI ( www.nomirestaurant.com ) is also close by. Spiaggia ( www.levyrestaurants.com ) isn't all that far away, either. All three are within walking distance, and all are excellent, albeit expensive. These are among the very best restaurants in Chicago.
Since it's Saturday night, you will want to make reservations in advance. All of these places accept reservations on opentable.com