As many before me have mentioned, this is a great hotel for the convention center - you don't even have to go outside. If the reason for your trip is a convention, then I think it's the best possible choice. I attended a conference in Chicago and stayed at this hotel as well as the Hyatt Regency on Wacker (the Hyatt Regency Chicago). I think of the two the McCormick Place Hyatt is more modern and has probably been more recently updated. The room was very clean, the room design was more current, and the bathroom fixtures were newer. On the other hand, I think the service at this hotel was perhaps not as serene as at the Hyatt on Wacker - I had longer waits to speak with the concierge/front desk at the McCormick Place Hyatt, and I got some "I don't knows" from the front desk in response to questions they should have been able to accommodate. One example was when we inquired regarding the Metra, which is the closest public transportation option to our hotel - they didn't have any schedules on hand and could not tell us anything about using it. Another example - I left an item in my room when I checked out, and one of my colleagues who was still in the room brought it down to be mailed to me and filled out a FedEx slip with my name and address. Due to a lack of communication between the front desk and the packing departments, however, calls to the front desk about my item the next day got a response that they didn't know anything about it. After calling back again, and speaking to shipping, where it turns out my item would have languished until I managed to get connected to someone who knew something about it, they finally took my credit card information and sent my item, which I have since received. I am inclined to attribute some of this confusion to the fact that many people were checking out the day I did, and I had confidence that this issue would eventually be resolved satisfactorily, but I think the front desk could strive to emulate the focus on service that the Hyatt on Wacker demonstrated to me during my stay there.That said, for attending a conference in Chicago I wouldn't stay anywhere else.