With the return of visitors to Rome, people are asking me for advice on where to eat. Therefore I will publish this list before I’m really ready to as I have not found ten places off the beaten path that I would recommend. Instead, this list is mostly famous places.
First, my recommendations out of the famous places:
Pierluigi, Piazza de Ricci 144 (downtown Rome): it is on its own piazza and you can enjoy the people watching. It is a seafood restaurant, but it has the most delicious vegetarian pasta and tiramisu. You will need to make a reservation.
Colline Emiliane, Via degli Avignonesi 22 (near Piazza Barbarini): This place makes delicious food. It is the cuisine of Emilia-Romagna (Bologna, Modena, Parma, etc.). Small and with no outdoor seating. But, they have a window where you can watch the pasta being made fresh every day. You have to call to make a reservation.
Tonnorello (several locations in Trastevere): I thought it was a zoo eating there, way overcrowded and the same food you can get most places. If you go at 12:30 pm, you can probably get in to one of the locations.
La Matriciana (across from the opera house, near the Termini train station), Via del Viminale, 44: Classic place from 1870.
Then the less famous places:
Fuoco Lento, Via Flavia 63/65 (in Ludovisi/Sallustiano): Old school waiters, outdoor seating as well, never had anything bad here. It’s my “go-to” place. Open on Sunday night as well. Outside the touristy area so much easier get a table.
Da Bucatino, Via Luca della Robbia 84/86 (in Testaccio): outside the tourist areas, has outdoor seating, and is an old school place.
Tratteria Valentino (not to be confused with Trattoria da Valentino on Via Cavour, which is also fine.), Via del Boschetto 37 (in Monti): great local place on a side street in Monti. Near Quirinale palace. Hidden in plain sight because they kept the old facade from when the space was a ice shop.
And one that is not famous:
Osteria del Rione, Via Basento, 20 (near Villa Borghese): Just north of the Via Veneto neighborhood, this place is a real local place located in a basement. There is almost no other business on the street, an extremely limited menu (basically what Bruno, the owner, tells you he has), and a set menu for 10 euro.
Lastly, I recommend one place outside Rome (near the airport) Osteria dell’elefante, which I wrote about before.
Once I have been to ten places that are fairly unknown, like Osteria del Rione, I’ll write about them.
very nice and noisy bakery to buy warm pizza alla pala, bread, cakes, biscuits … it’s so so so so famous. It does have lots of stuff and they are accustomed to tourists so don’t even try to speak Italian in there. 
… It is the organic store for Rome. 
Salvo patria, 
La condessa, Calle 85 (and other location): I hoped it would be great. They have fancy beer… But, the Florentine salad was a revelation. The lettuce was delicious. Completely undressed.