I've had to come here for a series of conferences for work. The conference rooms upstairs have very uncomfortable chairs and basic tables. There are very few outlets to plug in laptops, so it was difficult to get things done. The wireless internet is VERY unreliable and slow when it is actually working. Bathrooms are small and not the cleanest I've ever seen. During lunch breaks, there are no options at the Center. There are no places that have food or microwaves and the only vending machines sell drinks at ridiculously high prices.
If you are looking for somewhere to hold a conference, I would look elsewhere. There have be better places in Madison that are equipped to host a business event.