Man, the last time I had set foot on Michigan's north campus was about 8 years ago. Hope the attendees enjoy themselves, Ann Arbor is one of the best college towns in the country.
I was thinking it was on north campus at the first glance, but actually it's at the new North Quad on central campus. (And another building on nearby Washington St.)
The other building is the Techarb, a student startup accelerator - http://cfe.engin.umich.edu/techarb/
My startup, Fetchnotes, works out of there, it's a great place.