Lisbon to Prague via Europe

Are you flying from Barcelona to Rome?
If you’re taking a train or bus, it’s a massive trip, and I’d recommend cutting a day or 2 from Venice to make up for it.
Barcelona and Rome are two places well worth 4 full days, plenty on offer. I had my fill of Venice in one solid day of walking, more would be ideal but 4 I think is probably too much.

Great places though IMO, you’ll have a ball.

No we were thinking of taking the ferry to cittavechia which takes 19 hours and yeah i have been told that before to take day or two off venice and now u mentioned it to thtas probably what we will end up doing
thanks!

There are a few low cost airlines that do this route. (and that would save you tons of traveling and money). Check Vueling, Ryanair.