Chicago, you'll love it, such gorgeous architecture. Probably my favorite US city. My favorite walk close to you: exit the hotel, go south on Michigan, explore Millenium Park Park ( Navy Pier is blah, but millenium Park/Grant Park is glorious- don't ignore the Cloud Gate sculpture, the twisted bridge etc), cross back to Michigan, sneak peak into the interior of the Fine Arts building at 410 South Michigan ( gorgeous Art Nouveau interior), notice if Art Museum Lions are wearing anything unusual ( like the Bears uniforms, though it'll be past the football season), keep walking South meandering through Grant Park, Buckingham Fountain should be working in late April, with flowers all around, pass by the Field Museum, Planetarium and Acquarium, walk on the boardwalk by the lake near the Acquarium ( that's quite a long walk). If you are into art at all, the Art Museum is not to be missed; it's much more compact than the Met but incredibly impressive. Symphony is awesome, as well, if you are in a concert mood. Restaurants- not cheap ( but not backbreaking either) and not quiet, but Frontera Grill, at 445 North Clark Street- Rick Bayless' gourmet Mexican, absolutely delicious and justly famous ( mezcal margaritas, oh my). Wacker Drive is beautiful; it's another great walk just to follow it from Michigan Ave. west as it curves. You can't lose, really. Chicago is very special. BTW, there is a lovely Nordstroms on Michigan probably across from your hotel There are numerous posh hotels on and near Michigan where it's fun to go into a bar for a drink- the Drake at the North End of Michigan Ave, for example.