WE recently stayed at the Chicago Magnificant Mile Marriott. I am a Platinum Elite Marriott Member. We stay many nights at Marriott properties. Most are terrific and acknowledge Platinum loyalty. Don't expect any consideration as a platinum member At this hotel. No thank you upon arrival. No upgrade or acknowledgement. Very basic ordinary room. No concierge level room open during long weekend or offer for compensation. No advantage for my long term loyalty that I can determine. Will definitely try a different hotel next time in Chicago Since Platinum status gets you nothing at this location.