20 minutes from Matsumoto Station. Take Bus No.1 or No.2 from the bus terminal (beside Alio department store) across from the east exit of the station.
When you get off at "Sogo Taiikukan," you'll see the hall in front on the right. Just cross the road at the pedestrian crossing.
When you get off at "Daiichi-koko", walk back to the "Sports-bashi Higashi" intersection (there is a BBQ restaurant on the corner), turn right and go across the bridge. You'll find the hall on the right.
Alpico Group bus (coach) timetable site "Access Shinshu" (information is mostly in Japanese)