In September, 2005, while visiting friends and relatives in the "suburbs" of Turin, we suffered the same problem we had in March, 2004 -- blocked access roads on the highway leading into the city. We knew it was hopeless getting down to the Via Roma, were starving, and chanced on a "3 star" establishment, the Belvedere Hotel and Restaurant, that gave us a "5 star" dining experience.
The Eddas have been operating this venue for 41 years, and their daughter is a wine expert. Even the white Roero Arneis (Mumplin) ordered "by the glass" will arrive in its Riedel goblet.
Although the Belvedere is set on a major urban thoroughfare, a walk through the lovely indoor restaurant brought us to a magical garden full of Piedmontese diners (mostly businessmen at lunch). A woman appeared who "told" us what was available from the kitchen that afternoon.
We chose Agnelotti con salsa arrosta (the famous Piedmontese ravioli in a roasted veal sauce), Vitello tonnato, and Tagliatini in salsa di porcini. Marvelous finishes included Cheese with honey, an unbelievable Moscato Mousse with gooseberries, and chocalate pie-type dessert; these were served with "alchechengi", a form of mandarin.
For an experience that a standard guide book (or a non-standard like the D&K we had in our car) cannot guide one toward, this is the place!