The last Minox camera I have acquired (MInox Riga) had a film inside, marked ISOPAN ISS 100.
Developed in Rodinal Special 1+50, 15 mins, 20*C, in Minox tank, scanned negative. Only 20 something frames survived. It would appear the film was overexposed in many frames, and some scratches can be noticed.
I wonder where the film was shot. I have no idea where the bridge is or that channel is, but the mountain and landscapes appear to be somewhere in Germany (Austria, Switzerland?), high in the mountains.
One of the shots (the hotel) exists in the small town of Halstatt, Austria. If so, then I would assume the lake is Hallstätter See. And I believe the frame no. 16 may show the Berchtesgaden ridge, where the (in)famous Wolfschanze was. That location is not very far from the Halstatt area.
Interesting film, wonder about the period and owner.