DO NOT Stay Here
It had been a while since I been to Chicago, but decided to return to the Wyndham, which I soon found out was the Hyatt now. Unfortunately the name wasnt the only thing to change. The service, quality and value changed as well. 
We had stayed here in the past dozens of times and it was always a exceptional experience, clean, great customer service and just a great place for the price. 
Well, thing sure have changed. Upon arrive, we soon learned that things were very unorganized (staff). We got to our room to see that the carpet was extremely stained in severl places, the furniture was old and damaged, the bed was from the 70s and the TV was something my famliy bought 25 years ago (or so). The shower and bathroom were disgusting. The shower head was about 4ft 8in tall and the water pressure was weak at best. The toilet cover was too small and mismatched and you could see into the back of the toilet. Very unpleasent. 
The first morning we were woken by construction in the room next to us at 8:30am and it continued until we decided to go see if we could move rooms. They did move us, but it was like pulling teeth to get it to happen. The offered us free breakfast vouchers, which is fine, but seriously, thats your offer for the trash you expected me to stay in? The breakfast wasnt good, eggs were aweful and the bacon was cold. The server was the only bright spot, he was exceptional. 
The second room we moved to was more of the same, including the noise. It continued for a while during the day, then we left our room. It was still there at night, but I have a white noise maker that drowned it out to sleep. It was still there in the morning.... What a JOKE!
My recommendation, DONT STAY HERE! Go across the road to the Red Roof Inn, it will be exactly the same for far less money. 
If I could give this a ZERO star, I would in a second, that is how bad my experience was. I will never stay at this hotel again and plan to start returning to Chicago more frequently as my daughter gets older.