Hate to share this place, as it's my favourite local, cosy restaurant, but... try Restaurant Miracle, on Fröhlichstrasse, Seefeld. Walk along the lakeside from Bellevue, you'll be there in under 20 minutes and have a good appetite!
Best pizza in town, Italian-Swiss menus, wines etc all decently priced and informal. Owner Rosemarie speaks English and very friendly. Place has a warm, wood-panelled interior and you'll be sitting next to people form the neighbourhood, not the posers of more fashionable places. Highly recommended http://www.swissguide.ch/de/ecd/cata...racleatti.html
(booking a good idea)
Also Tiffins on Seefeldstrasse: an open, lively atmosphere with decent Asian food at affordable prices.