What does it mean that it's a balcony room?
Non tower rooms third floor through ten have balconies. Relatively small spaces to sit outside
You can open the sliding glass door in your room but it's a small cement slab balcony with a cement wall for the railing.
There was actually a sliding glass door and small balcony. Most rooms did not have that.
Get an answer from Hyatt Regency O'Hare Chicago staff and past guests.