Step 3: Buy a vaporetto tourist ticket or a supply of "disabled tickets."
ACTV, the Venice transportation authority, offers half-day, full-day, and multi-day tourist travel cards that allow unlimited travel on any of the city's water buses. You can buy these at the ACTV office in the Piazzale Roma or the vaporetto ticket booths near the railway station, the Fondamenta Nuove, the Piazza San Marco, and other locations.
Another (and more expensive) option may be the Venice Connected pass, which offers an a la carte package of vaporetto transportation, public toilets, admission to municipal museums, optional roundtrip transportation on the Alilaguna airport boat, and other perks with a frustratingly complicated pricing scheme.
Finally, passengers with wheelchairs can buy single-fare "disabled tickets" at heavily-discounted rates from ACTV ticket booths and Hellovenezia offices. Each ticket is valid for 75 minutes, and a companion travels free.
Once you have a pass or a supply of tickets, you'll be able to get between the city's various "accessibility zones" on the map by using the water buses. (The city claims that about 70 per cent of the streets in the historic center are accessible by vaporetto.)
This strategy works especially well on the Grand Canal, the Giudecca Canal, and the Lido, where the No. 1 and No. 2 water buses have flat decks and are fully accessible by wheelchair.
The No. 1 boat is the most useful, since it zigzags from one side of the Grand Canal to the other on its 20-stop journey from the Piazzale Roma to the Lido. As the photo shows, this water bus can be crowded during the tourist season, but the conductor will usually clear a path for you, and the crew will help you on or off the boat quickly and without fuss.
Step 4: When in doubt, call ahead.
Most churches are accessible once you get inside. The tricky part may be in getting up the steps, but this can be managed if you have a strong companion or aren't shy about bumming a lift from athletic tourists or locals.
Other buildings, such as museums, may vary in accessibility. The most impressive rooms in the Scuola Grande di San Rocco, for example, require climbing a long flight of marble stairs--unless you use the special wheelchair with motorized rubber treads, which lets you assault the staircase like an army tank. Your best bet is to phone before you go, so you can make other plans if the building requires a sturdy set of lungs and legs.
More online information:
First, see page 3 of this article for a mini-map that shows wheelchair-accessible routes in the city center.
The City of Venice has accessible Venice pages with general advice, an accessibility map in PDF format, a selection of barrier-free itineraries that are mostly up to date, lists of businesses that rent wheelchairs and accessible motorboats, and other useful information.
Another handy resource is the Venice page of Accessible Europe (see below), which--among other things--tells where to find accessible WCs and parking.
Please note that information in guidebooks or on Web sites isn't always up to date. (For example, many guidebooks and sites still mention bridge lifts that are no longer in service.)
A guide service:
Mike and Karen Henderson of The Venice Experience offer guided sightseeing tours, including itineraries for mobility-impaired travelers.
Two agencies that specialize in accessible travel:
Rebekah Serin of Regency San Marino SRL's Accessible Italy department writes:
Another firm, Accessible Europe, has been serving disabled travelers since 1993. Massimo Micotti's company offers tour packages in Venice, Florence, and Rome that include transfers and half a day of guided sightseeing. Other services include transportion in accessible vans, rentals of self-drive cars for disabled travelers, wheelchair and scooter hire, help in obtaining dialysis or oxygen, etc.