Looked at the reviews, after visiting the restaurant, and Terno Secco was priced on par with other restaurants. Starter (Mozzarelline Fritte) and main (pasta x2, Calzone) were both fine. For us, it was only the desserts that were poor - very panna cotta and mousse cioccalato. As on other reviews, the food was brought at at different times for those on the table. Indeed, seemed as though the pasta across the restaurant were brought out at the same time... so got the feelign it was not cooked to order as such.
We had no service charge, though a cover charge is normal in Italy.
Would I go back, probably not, as I know of other restaurants that are better, though at the time, it was OK.