How many days in Italy?

March 9: arrive in Rome, get to hotel, check in, unpack, eat lunch, wander March 10: Rome March 11: Rome March 12: Rome March 13: train to Florence, get to hotel, check in, unpack, etc. March 14: Florence March 15: day trip to Pisa and Lucca via train March 16: train to Venice March 17: Venice March 18: Venice
March 19: fly home

with only 11 days and since you are travelling in March I would suggest skipping Cinque Terre. Fly into Rome and out of Venice ( or vice versa would work)
focus on the three major locations, Rome, Florence and Venice. It's up to you how to split the time but something like 4-5 days Rome, 3-4 days Florence and 3-4 days Venice is usually a good start

As much as we love the CT, Toni's plan makes sense. If you must go to the CT, do it after Rome and before Florence. Are you aware about the flooding issues in Vernazza?

Rome, Florence, and Venice make sense in March. As much as CT needs tourist dollars right now, in March, your time is probably best spent in the big 3. If art's not your thing, you may have too much time in Florence. However, it makes a great base to explore Tuscany via day trips, so I think your time there is pretty good, unless you want to stay in a Tuscan town to get that experience (always recommended, by the way). To fully experience Italy, you've got to see the countryside, and hopefully spend a night there. Have fun!

Thanks guys I think I will go with tony. CT was a bit sceptical coz t floods just wanted to have a second opinion though.btw am flying in Rome n out of Venice into Switzerland for the 2nd leg

Txs a tonne ekc as well

Plan another visit to Italy in the later spring or summer and visit the Cinque Terre then. You will have a great time in Rome, Florence and Venice.
Happy Travels!