Looking at booking a hotel here but our flight is fairly late and lands at Treviso at 21.35 - how easy will it be for us to get to the area at that time of night?
You'll need to get a bus from your airport and then a water bus from the mainland. San Marco has at least three stops very near it, and is busy until after midnight. You shouldn't struggle to get tp your hotel.
You should download the app for the vaporetto, its called ACTV. You can buy the tickets there and also it show you the times, stops, etc.
I would also advice to use the Vaporetto service, especially as you may need it also to get to your hotel in Venice itself. Best to contact your hotel and ask for advice. Vaporetto tickets can also be pre-booked online and also for a longer range (up to 4 days).
You can always take a water taxi from the airport but it will be expensive. Vaporettos are public water buses and you can see if they come to the airport. They're inexpensive. When we arrived we had a private water transfer because we booked with our cruiseline. Some hotels might also have such services.
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