I'm not all that fond of
Yolk. I mean, it's not bad or anything. But the offerings are just your standard breakfast dishes, eggs and pancakes and such, and it's not unusual in any way. Whereas Bongo Room has those pancake dishes unlike anything elsewhere in Chicagoland (or even anywhere else I've encountered).
I don't usually recommend seafood restaurants or steakhouses to people looking for "local flavor", just because those types of restaurants - and good ones - can be found in nearly every big city. However, if that's what you're looking for, rather than food that's a bit more unusual and more local, by all means go for it.
If you do want seafood (lunch or dinner),
Shaw's is very good. It's a conventional seafood restaurant, designed to resemble old-time seafood restaurants in New England. It's in River North, about a mile north of your hotel.
For steakhouses, we have a lot of good ones. I still think that the best steaks are at
David Burke's Primehouse. I also like it because they have more variety on the menu than most, and the atmosphere is more contemporary and elegant, rather than the bustling men's club atmosphere of many other steakhouses. It too is in River North, about a mile north of your hotel.
If you would like to try something a bit more unusual, then in addition to Mercat a la Planxa, I recommend one of our restaurants specializing in creative provincial Mexican restaurants. This is a type of food not often found elsewhere around the country. Rick Bayless was a pioneer in this cuisine, and his
Frontera Grill and Topolobampo are still going strong after 25+ years. Both are in River North. Topolobampo accepts reservations on Opentable.com but has been booking up several months in advance, at least for dinner. Frontera Grill holds most of the restaurant for walk-in traffic; waits for seating tend to be shortest when they first open (although I was there a few weeks ago on a weeknight and there was little to no wait). Also note that Frontera Grill is open for brunch on Saturdays. Another place for excellent creative Mexican cuisine is
Mundial Cocina Mestiza. Mundial is in the Pilsen neighborhood, about three miles southwest of your hotel.
If you enjoy contemporary American restaurants,
Custom House is just a few blocks from your hotel. My favorite is
Cafe Des Architectes, in the Sofitel off Michigan Avenue, a mile and a half north of your hotel. I love it for its superb food, and it's also nice that it's an excellent value, offering a $42 3-course prix fixe menu every day, and a $29 3-course "neighborhood friends" menu Sundays through Tuesdays. And for "local flavor", nothing can beat
North Pond - not only for its excellent food, but also for its exquisite setting in the middle of Lincoln Park (the park itself, not the adjacent neighborhood of the same name), about four miles north of your hotel. It's located facing its namesake pond, with the city skyline looming over the opposite shore, and is in a renovated building that formerly served as a warming shelter for ice skaters on the pond in winter.