The restaurateur who does the best job of recreating certain Roman classics at his restaurants in NYC is Danny Meyer, in my opinion. Marta is perhaps the more casual of the two; Maialino the fancier one - but trust me, dress-up is not required at either.
Last week, before a couple of shows we were going to see, we had the opportunity to dine at both. At Marta, we sat at the pizza counter.
With a salad and an order of meatballs, this was a nice, light dinner. That's the "Amatriciana" pie.