Limited time in Gujo Hachiman

Plan on 3 hrs actual sightseeing time in Gujo, would like to walk along a canal street like Igawa komichi or "Small canal street" as my wife is mainly interested to see the 3 tiered washing or misu fune??, then visit the historic town but not to spend too much time as have been to similar places elsewhere, which part is best for a 30 mins browse ? Then walk or drive along the Yoshida river to round off the time. Not planning on the castle as visited other Japanese castles elsewhere. My question : are the caves in and around Gujo anything special and if so we will budget more time to visit one which means a more hectic drive to our next destination, by the way we are driving.
Any advice on a Hida beef BBQ restaurant in Gujo (need tel no. for GPS) ?

Gujo is known for wax food samples. You can take a lesson on how they make the wax foods that are on display in restaurants throughout Japan or go shopping for wax food samples. They have a variety of things for sale.

You might be able to find some izakaya that serves hida beef. Gujo is known for clean water, which they say makes the soba noodles take good. They have a lot of noodle shops there.

Only one cave is constantly open. Others have limited opening hours. I have just been to the open one, and it is interesting but not great. If you only have limited time, I think you should skip it.

....Now can plan our time in Gujo better.