Getting there

You can get to this hike either by bus or by car. 

The carpark/trailhead can be found at Sannomiya Shrine (Shiga Prefecture). You can alternatively park at the abandoned gondola car park, just be warned that the road is wildly narrow. 

When parking be careful of the old people that try to whisk you into their carparks. They hold try to tell you that you can't drive up the road and try to force you to park on their properties for some money. This is not true, you can just drive right past them and continue to the shrine or gondola carpark. The old people will scam you. The official parking is much cheaper, between 200 and 300 yen. 

From the carpark/bus stop look for the sign post that says Ibukiyama. 

Maps

Google mannnn

Route/Trail notes

It is almost impossible to get lost on this hike. Essentially just follow the one way path. It will first take you through some dense forest before the track becomes more exposed and takes you past some abandoned buildings. Continue up the mountain where the path becomes a series of switchbacks. Once you reach a fenced area, open the door and enter the fenced area, this is the summit of Mount Ibuki. Follow same track down. 

There are alternate hiking tracks from the Gifu side of the mountain, but I do not know the details. 

It is also possible to drive to the top of the mountain if you are really lazy. 

Permits/Costs

Parking