Karen,
This was posted on a previous thread but another great restaurant if you're near the Spanish Steps.
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We ate at an excellent restaurant during the week we spent in Rome before 007 cruise. In fact it was so good we went back a 2nd time with the LCTers we cruised with on 007 (Karen, Joanna, Todd, etc.) The prices were very reasonable (downright cheap by Rome standards) and the food was outstanding and great house wine. They have both indoor and outdoor dining (weather permitting).

"Otello alla Concordia"
address: Via della Croce #81 (near the Spanish Steps).
This is their website: http://www.otelloallaconcordia.com/