The Sheraton Chicago Towers is well-located along the river, with good views from all directions, including of the river, cityscapes and peaks at Lake Michigan. The rooms are well-appointed, though not very spacious for the room rate. The beds are comfortable, with big heavy comforters and lighter comforters underneath, so whatever you prefer is available.
Like many city hotels, there is no refrigerator space to use, only a fridge filled with expensive sodas and waters that you will be charged for if you take, or even if they move out of their space, apparently. (The hotel took off the $7.97 charge for a Gatorade fruit punch that I did not in fact consume--that's what I mean by expensive!)
My primary warning is about the option you can choose if booking online, or that you might be offered at the front-desk at check-in, for the "Green" or "Sustainability" program. In most hotels, at any cost-point, this means the option to not have beds changed and towels replaced every day, and that's what the program sounded like it would be like at check-in, when we agreed.
Instead, it meant no housekeeping service at all. None. Not one housekeeping person came in the room for four days, which meant no waste-baskets were emptied, the bathroom was not cleaned, and nothing was replenished, not even the tissues, which ran out on the third day. The room had a single-cup coffee-maker, but there were only two pods of coffee provided, and only two sugars and two creamers, total! Busy all day at our conference, we did not bring this up until the third day, when we complained to the front desk. But even then we were told that was the way the program was, and apparently there was no way to get housekeeping service back! I stayed another day and a half, but no one called to ask if we needed anything. I ended up taking a box of tissues out of the pool locker-room.
I have sent a detailed complaint to the hotel. We'll see if there is any response.
Enjoy your stay, but if you want housekeeping at all (as part of your fairly high bill), don't go green, unfortunately.