As I told last time you posted it, it was damn familiar for me. Of course it was -- I was there!

But it is not in Italy. Just North of it: Brig, Switzerland, the Stockalper Castle and the College Church, with the Riederhorn in the background:

Webcam with the Stockalper Castle:

I had a suspicion about Switzerland, because those special arm-rests for wooden seats are a 'luxury' I'd expect only there, and indeed now I found  a picture of a former SBB 3rd class wooden interior:

So if the inscription above the door is "Don't smoke" in Italian,  Fran was right, and this was somewhere in the Italian part of Switzerland at the end of WWII.

_{*Lunatic*, n.
One whose delusions are out of fashion.}