The Ca' D'Alisera bed and breakfast is located in the historical center of Venice , in Calle del Ridotto, right behind Saint Mark Square.
Take a vaporetto, the local and typical water bus, to get to the residence.
Water bus n. 1 or n. 2 going to Saint Mark's shall take you here.
Tickets are 6.50 euros.
You should get off at San Marco Calle Vallaresso (see map130kb).
If you get off at Rialto (see map210kb), the residence is at an additional walking distance of 5 minutes.
On ACTV web site you can find all the information you may need.