I have stayed at this hotel many times. It does often get confused with the other one, which is a shame.
For weekends in Chicago, they often have VERY good pre-paid rates. If you are comfortable paying up front, there can be great value. And it doesn't always have to be booked way in advanced.
Plat Prem recognition is very good. Usually a suite given, regardless of reservation type. I found the lounge breakfast adequate. Evening offerings less so. But bottled water and cans of soda well stocked.