I love Rick Steves and take his books with me when I travel to Italy. But I have to tell Rick that you NEED more than 3 pairs of underwear on a trip longer than a week!
I packed carefully for my most recent trip Home To Italy this October. Everything coordinated and everything could be used with 3 or more items. The trip was for 4+ weeks in Italy and a return to the USA by ship for 14 days.
So Off I go!
Later I found suitable warm clothing for 10E, 8 E and 12 E!
Once I arrived in Venice the convent hotel had heat! They were surprised when I called and asked if the heat was turned on, the staff member just said, this is VENICE!.