It’s hard to go wrong with Italian food in Boston’s North End, but one surefire way to go right is to turn left from the door of the Paul Revere House and slip inside the historic town house that’s home to Mamma Maria, an unmissable fine-dining restaurant facing North Square. Settle into the serenely elegant dining room overlooking the square to feast on classics like terrine of suckling pig, veal osso buco, Tuscan-style rabbit pappardelle, and a wide selection of seafood dishes from local waters. The uninitiated may mutter a “mamma mia” at the prices, but for Northern Italian in the North End, Mamma Maria rules the house.