Some corners cut but good overall
I enjoyed my stay at the Hotel Sax overall. The room was nicely decorated, clean, in a great location, and good-sized for Chicago. But there were a few places where they cut corners in a way that's not really OK at a 4-star hotel:
No real bathtub: the bathtub is smaller than normal, you can't take a bath in it. I'm guessing this was done to save money and make the bathroom look bigger.
Wall-mounted soap and shampoo in the shower: Not OK at a 4-star hotel
Toilet didn't work right: Not OK anywhere
Cheap towels: The thin towels would have been great at a Travelodge, not so much at a hotel of this caliber.
Also, it would have been nice to have a coffeemaker in the room.