How about Venis or Florance. I am partial to Italy
The Bavarian area of Germany is beautiful. Switzerland is breathing taking.
I haven't to Amsterdam.
You are going to have a good distance of travel between Rome and Paris. That will eat up a good part of a day.
Let us know where you choose to go. I know you will have a great time.
Mattiez
Are you going to get a Eurorail pass?