Il Vegetariano is an amazing place. Rustic Cafeteria-Osteria with vegetarian and vegan food, many organic ingredients. Incredible atmosphere, no reservations - be there at least half an hour before it opens or try your luck rather late.
This is how it works: the first person in should immediately get in line at the cashier at the back to order food and drinks. The second person in takes care of getting a nice table. Next, take a look at the hand-written menu on the wall and tell the person in line what to order. After placing your orders and paying (cash only!), take the receipt to the food counter and get your food and drinks. Enjoy!
http://www.il-vegetariano.it/