A restoration of Vittorio Sala 's "Vacazioni in Italia" (1954) has been published to Youtube by Luce Archivo.
"First published on the Archive portal, this short film, directed by Vittorio Sala in 1954 and produced by the Istituto Nazionale Luce, guides us through the beauties of our country, a summer destination for many foreign tourists."
https://www.archivioluce.com/vacanze-in-italia/
The web article and film's narrative are in Italian, but you can at least translate the article into English.
If you want to see Milan, Venice and other tourist highlights like Capri from 1954 you're in luck. Outside of Capri and people's fashions most things look the same - San Marco, Doge's Palace and MIlan Cathedral haven't changed. Honestly, it feels like post war propaganda to encourage tourism to help bolster the struggling Italian economy, but that's what most state supported travelogues are in the end.
Check it out if the idea interests you,
=Tod