I recently organized a small technology conference at the SpringHill Suites Chicago O'Hare, Illinois. The location was ideal for our purposes - it has several small meeting rooms, some convertible space, and easy access for caterers. Our convention attendees also indicated in the event wrap-up that they preferred the hotel suites to the hotel rooms at other conventions. The staff was organized and professional when they dealt with our requirements, and adapted easily to our complicated technology needs (which they apparently deal with frequently). They were willing to work with us in terms of our various catering needs - we had some more formal appetizers with servers, and some casual lunches with sandwiches or pizza, and a break room for people to hang out and chat. And they didn't object to the late-night brainstorming and discussion that sometimes happened after events, which has been a problem at other hotels where the event meeting rooms are closer to the hotel rooms. They aren't the best hotel for everyone's purposes, though: the meeting rooms are customizable, so they worked for us since we brought our own tech; if you have complicated technology requirements and won't be traveling with your own equipment, they probably won't have it. They are located in a fairly nondescript part of Chicago; there are a few good restaurants in the area, but it's not very pedestrian-friendly or very exciting, if you're looking for something more urban. (It is close to airports and highways, though.) And the meeting rooms are generally designed better for powerpoint or presentations than for more demanding audio-visual needs. Overall, they worked quite well for our casual and conversational conference, but they wouldn't be my first choice for anything more formal.