Well, Italy is the first "adopted land" of Lupin III since the very first TV series (the italian were the first
ever in Europe to broadcast it). And Monkey Punch himself collaborated with Italian magazines and artists
during the late 70's early 80's.
So to me, it's really not that weird to see Lupin settling in Italy, at least as long as this new series lasts.
Lupin was Japan-grounded first in the manga as well as in the green jacket series.
His traveling habits began around the second TV series but one place he seemed to return a lot was France for a while.
I really cannot wait to learn more about this new TV series ! I'm so hyped at the moment !