Rick Bayless' newest restaurant in Chicago, Lena Brava is one of the highlights of the West Loop. It provides delicous upscale Mexican food with great drinks. The cod is out of this world, but it is tough to go wrong. You will want a reservation and they are impossible to get through open table but I have found the hostess to be very accommodating if you call instead (call during off hours of the restaurant so it goes right to their reservations). Also has a bar attached if you want to try and wait it out.
900 W Randolph St, Chicago, IL 60607, USA