good restaurants near Westin Europa, Venice

Would appreciate suggestions for moderate, pleasant restaurants within 15 min. walking distance from the Westin. (say about $60 U.S. for dinner for 2, glass of wine each?) We like seafood, pasta, salads; meat, not so much. If pizza is exceptional would probably enjoy a great pizza/salad dinner as well.

Would also appreciate inexpensive lunch suggestions (other than gelato, which we will certainly make our lunch some of the days). In fact, is there a stand-out gelateria near the Westin?

Thank you.