From previous boards, I can see that Giglio D'oro near the duomo is excellent in Orvieto.
I have also see that Trattoria Etrusca is good. I am, incidently, going to Orivieto this weekend and wanted to try one of those places (or another one). I REALLY want to try Giglio D'oro because every time I try your recommendations (especially Maureen's) I am so impressed, but we have to be conscious of cost (unfortunately). To keep costs down, my partner and I usually share an antipasto, skip dolci and get a decent bottle of wine but not too expensive.
Are these moderately priced restaurants? If not, any more ideas for the center of Orvieto?