Taki-kun visited Hida region to look for Mitsuha's town. They are disappointed at the bus stop. Because they could not get any information about Itomori. It is Ochiai bus stop. It is currently used as a bus stop for the school bus. Route buses does not stop here. So you should go by train.
The nearest is Tsunogawa Station. The bus stop is it takes a 7-minute walk from the station.