We really liked Maccheroni, too. It seemed to be full of locals. It was atmospheric and crowded. somewhat loud. Not expensive "fine" dining, per se. Good everyday type menu.

Pierluigi, near Campo d'fiori

we enjoyed Abruzzi for fantastic spaghetti a la carbonara.

Do Romans really eat at McDonalds, KFC and - gulp - Taco Bell???

I enjoyed Pierluigi very much.

I was less impressed, however, with Colline Emiliane. I think they got a number of favorable write-ups a while back (from various sources) and have been resting on their laurels ever since, which is most unfortunate.

I also very much enjoyed Vegetarian Margutta, although I'm not a vegetarian. It, too, is not far from Piazza del Popolo. Brilliant, inventive menu, lovely service and romantic ambiance for a Friday evening dinner.