Concierge.com's insider take:
At Il Convivio, imposingly formal decor is matched by impeccable, equally formal service. The three dining rooms are always busy, with a well-heeled, elegant crowd that doesn't mind the prices (i.e., plenty of silver-haired businessmen). The Troiani brothers turn out perfectly executed dishes, including a risotto with herbs, Roman cheese, and favas, and a sage-scented roasted pigeon with red wine and cherry sauce. The extensive wine list, with bottles from all over the world, is another pleasure.
Closed Sundays, and for lunch on Mondays.