We just returned from a ten day trip to Italy. First off, I want to say how much help this forum was while preparing for the trip. One minor problem we experienced.
Our visa plus card did not work in any of the ATMs in the 4 cinque terre towns we visited.(we did not go to monterosa. ). We had another credit card but could not use it in the ATMs due to not having set up a PIN number. It was a bit of a problem due to our landlord only accepting cash. We stayed 3 nights in ct and owed him 255 euros and did not bring that much cash. He was very understanding and we eventually got our bank to wire him the money.
The bank in vernazza had a sign that said "no Visa Plus". So there must be some reason they aren't accepting it. When we left ct and went to Florence we were able to use the card in the ATMs. (met some other tourists in ct that also had problems with their visa plus cards. )
Despite this glitch we had a great time in cinque terre.