Bethlehem doesn't lack for Italian restaurants, even good Italian restaurants. Metromix lists 220 in the Lehigh Valley. There's a clear difference between Sal's on the Southside and Melt in the Promenade Shops. MN falls in between, with the homey feel of a relative's dining room, friendly and sincere service, and the flavors and presentation of a sophisticated chef. If you haven't visited yet, you might want to order your complimentary garlic bread with the garlic on the side, so you can "control" the amount of garlic intake. Also, you should know that the restaurant is BYOB. If you forget to bring a bottle, they'll offer you a complimentary glass of house wine, or you can scoot across the street to Franklin Hill to pick up a bottle of local vino.
A few tables out on the sidewalk are always in demand this time of year. The restaurant doesn't take reservations except for large groups, so plan ahead. (And don't forget the mints - you'll need them after the garlic bread.)