Antica Trattoria Due Collone, the place may have been around for a century plus, but it was remodeled fairly recently, everything except the eponymous columns was spiffy and modern. Despite being right on the main tourist drag between the Pantheon and Piazza di Spagna it was mostly Italians at lunch.
I had a very nice appetizer of moscardini with chickpeas.
One of my companions had the cozze, not bad though not as good as my moscardini.
We all had the ravioli di baccalà, the dish that drew us in, turned out to be filled with a mix of potato and cod (i.e. mantecato), very al dente in a light sauce of onion and parsley, very nice rustic dish.
Great choice for lunch if you need something in the midst of the tourist apocalypse.