Maria, I am sorry but I really don't know where it was except that it was near the train station. We took the train to Venice from Florence and got a water taxi outside the station to take us to our hotel. I assume that if we had exited the train station the other way we would have found regular taxis that could have taken us to the airport. we had arranged our transportation before we left home so a water taxi picked us up at our hotel and the car driver met us at the car park and drove us the rest of the way. It was all quite painless. Probably could have been arranged by the hotel if necessary. I am sure you can arrange ahead of time to put your parents at ease but they should not have any problem in any case. Venice was wonderful, most people spoke at least some English and everyone was quite helpful.