We took the train from Roma to Venezia. Going on the train is lot better than going on plane. We had more leg room. We were also in first class so got a free drink when we first got on.
When we first got to Venice we took the ferry to the Rialto bridge and walked to our hostel from there. The hostel is empty and being renovated.
After getting settle we went Saint Marco square and just walked about trying to get our bearings. Which did not work because the following day we got lost near there.