Simply outstanding...
I initially booked the Westin but was recommended by a good friend of mine to switch to the Sheraton which ended up being a great decision. From the staff, to the room, to the location, everything was simply oustanding. We had a beautiful unobstructed water view from our room and the Magnificant Mile was just a couple blocks away so it extremely convenient to shop then come back to drop off bags, then shop again haha. The staff there were very enthusiastic and always willing to help and offer help. Also, they have a very sizeable exercise gym and pool if it's important to you. I think the hotel itself is kind of an achitectural landmark b/c the boat tour mentioned it. I'm not usually into writing reviews on hotels but this Sheraton was exceptional. HIGHLY recommended.