Le Cave di San Ignazio is a famous/popular restaurant on Piazza di San Ignazio. In the early 1900's, it was the site of Rome's first pizzeria. Now a rendez-vous place for politicians, show business people and actors -- and the international crowd.
Lovely terrace on the square, where I stopped for a short break for appetizers and a pastry. I didn't see Berlusconi but I'm sure I saw a few of his sbirri there. Service was swift and very attentive.
Favorite Dish: I had vegetables au gratin, some ham and delicious ricotta. For energy to make my way back to the hostel, I chose the millefoglie (mille feuille pastry) and it was heavenly! They also have tiramisù that looked wonderful.
This is not a tea-room but I got there at a quiet time, after meal service, and was able to order just what I needed to keep walking. Very relaxing spot in a quiet square.