Gianduiotto di Nico is a healthy slice of chocolate and hazelnut gelato in a froth of panna (whipped cream). Best enjoyed while gazing out over the Giudecca Canal at Gelateria Nico on the Zattere.
Bacareto da Lele is "perfetto" for a quick sandwich and glass of wine; very inexpensive and wonderfully fresh! Sandwiches are less than 1 euro...find it at Campo Dei Tolentini in Santa Croce.
Caffe Rosso (Dorsoduro 2963) is a landmark spot on Campo Santa Margherita, a tiny bar, conspicuously painted red, and almost always busy with Venetians enjoying spritz and cicchetti.
When in Venice, be sure to try a spritz - a local drink enjoyed by all made with prosecco, bitters and water. The perfect pick-me-up on sunny afternoons.