Vallozzis in the heart of Downtown Pittsburgh is a great spot for business lunch and dinner. You can expect a decent wine selection, a well-sorted menu, and attentive service - exactly what you'd want from an upscale Italian restaurant.
While I was mostly satisfied with the food - especially the burrata (soft and creamy, $13) and the Crab Cake ($39.95), other items didn't meet expectations, especially the Osso Buco ($44), which lacked taste and came on a risotto that was al dente.
Our group was placed in a separate dining room without windows, not much atmosphere there. I recommend you to request the main dining room facing the street.
Overall, I found the prices a bit outrageous for Pittsburgh (I'd expect that in San Francisco), and my experience didn't justify charging ~$80 for an appetizer, entree, and two drinks.