Average Westin, need to upgrade rooms
Stayed here a few days for a wedding. Overall, positive stay and experience.
Positives: Front desk clerk was kind enough to check me in early. Conveniently located hotel, super nice lobby and great location. I used SPG points and cash to pay for room. Never acknowledged as an elite member or offered a check in amenity. 
Negatives: Dated room and furnishings. Annoying overpriced amenities abundent (small bottle of wine and $5 water) but no basic bath amenities like q tips or extra shampoo, old hair dryer and limited towels.Bathroom (room 405) in poor condition, shower valve difficult to work, shower head dated and bathroom had a weird mouldy/urine smell.Housekeeping was also spotty, particularly bathroom. 
Would stay again if i had a super low rate, but probably not the best choice in Chicago for $. In short, I expect more from Westin brand, particularly in guest rooms.