I decided to eat at Libretto's after driving into Charlotte late on a Sunday, 9pm. I was spending the night at the A Loft hotel which is part of the same development.
On a Sunday, the food options were slim pickings at 9:45pm. Most places nearby seemed to be closing at 10pm.
Libretto's comes off as a pizza joint, but they offer table service, and we had a beet salad and eggplant parmesan dinner. We subbed broccoli for the pasta that came with the eggplant ($3 charge). Overall, food was excellent and better than what we were expecting. We also ordered a Brooklyn Lager and a glass of Cabernet. The beer selection is respectable for a more casual space. We were still hungry at the end of the meal, but the portions were acceptable and reasonably priced. We ended up ordering three cheese slices to go for the hotel room. Pizza was great. All food plus tax came to $35 - relatively inexpensive.
Libretto's is casual, but a good value. It won't be your first choice for a swanky date, but if you are looking to get some good, simple Italian food or pizza, you won't be disappointed. P.S. - I'm from NYC, and can vouch that this place is legit, even by NYC standards.