Prowalk Tours (I think they are out of the State of Washington) recently uploaded a few walking tours of Italian cities. Sorrento (my favorite), Assisi (also my favorite), Venice (also my favorite), Rome (of course my favorite), Florence (you guessed it) and several other favorites are available. Each can run about 2 hours and is definitely a 'walking tour'. Each video tells you the date it was filmed, the time and the temperature. A few are from July and August of 2020 - too many closed businesses, not enough masks.
I'm probably the last person on the forum to know about these but hey, maybe they'll be of interest to someone. Once I get out a new box of tissues I'm going to re-watch Sorrento.