Here's the line up for our trip with 15 days (days broken down):
Fly from US to --> Venice (2 days) --> (train to) --> CT (2 days) --> (train to) --> Florence (3 days) (stop over at Pisa for few hours) --> day trip from Florence to Sienna if possible --> (train to) --> Rome (4 days) --> (Fly to OR Train ride to) --> Paris (4 days)(side trip to Versailles) --> home.
Does this transportaion idea sounds good in terms of time not being wasted? I like the idea of taking the train so we can see Italy while we are moving between cities wherever possible, but is it worth it? Is the journey comfortable in trains in Italy or flying will be more easy with a baby?
Would flying to Paris from Rome sounds better than a train ride?
Also, will be need to rent a car in any of the cities or foot/metro bus/boat rides be sufficient to see the place with a baby?