Yes, I've been there twice and both experiences were moderately disappointing for me. My wife has a worse opinion than that.
It's been nearly a month since my last visit and I didn't bother to take notes, so I apologize if my recollections lack precision.
I belong to a group which meets monthly in the area and our go-to place for was Tucchi Benucch (predecessor of Frankie's on the same site). Tucchi, though not great, was always a decent reliable restaurant. (Both Tucchi and Frankie's were/are part of the Lettuce Entertain You Group.)
Frankie's has a pizzeria outside the restaurant area which produces thin crust pizza. My friends who go more often say that they like it. I had one small pizza as an appetizer on my first visit and was satisfied. However, on the last visit I didn't see any pizza on the main menu.
As you can guess from the name, there are many scaloppine dishes on the menu -- looks like they have bulk orders with the scaloppine factory. It's not my favorite type of dish so on the first visit I had the brick oven chicken which was a little dry.
On the second visit on had a different chicken presentation - sorry but I can't for the life of me remember what it was - but it was also a mild disappointment. The fellow next to me tried the brick oven chicken despite my warning. Afterwards he didn't have much to say, but was not looking happy.
What was most notable on last month's visit was they had added butternut squash ravioli to the menu. This was a favorite of many at Tucchi Benucch so three people tried it, including Wife Number One. All three disliked the dish. Instead of the sweetness of the previous version it was now savory with some prosciutto added. It just didn't work.
The Wife didn't finish hers and wouldn't take the leftovers home. This is very unlike her.
Afterward, several of our group talked to the manager because we really want this place to work. He was polite, but clearly had a case of MEGO while my friends spoke to him.
We'll probably wind up there next week, unless the group decides on a new place, and I'll report further.
Finally, if you're looking for a nice place in the North Michigan Ave area, I recommend Sayat Nova, 157 E Ohio Street. It's a quiet Armenian restaurant in the block just east of Michigan. We've been going there for 20+ years and never had a bad meal. Prices are reasonable for the area, as the family running the restaurant owns the building. Nearly all main dishes are in the $15-20 range.
I particularly recommend the red lentil soup and the trout, but we've liked everything we've had over the years.
We'll probably be at Sayat this evening, and I'll report further if we do so.
Where there’s smoke, there may be salmon.