With things returning to " normal " , a visit to the eternal city might just be the ticket . Jason Farago in today's NY Times - https://www.nytimes.com/2021/06/25/arts/design/rome-museums-tourists.html?action=click&module=Editors%20Picks&pgtype=Homepage
My son spent today at Pompeii and there were very few people there. He said it was “shocking” how empty it was.
According to this link October to April: https://travel.usnews.com/Rome_Italy/When_To_Visit/
We like mid October. Sunny days, mild temps and less crowded.