Grandson, and friend, of Sicilian immigrants...
La Fornarina is as good as it gets. Thus far, I've tried the pizza (sauce is very much homemade (!)); riceballs (saffron isn't a cheap ingredient, but the owner uses it to ensure it's authentic).
The Eggplant Parmigiana is equal to my Grandmother's. My Grandmother's eggplant was known for not only being delicious, but devoid of any bitterness (amaro). I can say the same of La Fornarina.
The Penne Carbonara is very different than the neopolitan version I'm accustomed to, which is good, as it's rich in flavor, without being too heavy.
The owners are fantastic people. Great, upbeat, friendly, and you can see they love what they do.
I wish La Fornarina had desserts - specifically cookies. I miss the saviatta/paste di te cookies of my childhood.
If you love authentic Italian (as opposed to American Italian), you can't do better than La Fornarina.