Hi, sorry, I’ve been out of the loop.
What kind of food do you like? Personally I think Pittsburgh is a bistro kind of town.
The Strip District is adjacent to downtown & has lots of good food & fun atmosphere but take an Uber, parking’s Painful.
Gaucho Parilla ++ wood-fire meats. VERY busy. I usually order takeout. The rosemary beef sandwich is incredible.
Penn Avenue Fish is fabulous but not fancy. I hear Luke Wholey’s Is really good (and more elegant) but I haven’t been there myself.
Breakfast at Enrico’s not to be missed. Beans/greens + thick bacon & egg, tortas. It’s a hole-in-the-wall, very old school.
Kaya for fried chicken, hamburgers, solid foodie plates. Good drinks.
The East End where I live is chocked w/good little places & a little less intense than the Strip.
Park Bruges & Point Bruges = steak frites, moules; the Ace Hotel dining room = upscale eclectic; Cafe Zinho = Portuguese, old school, tiny and charming, my favorite; Casbah; Girasole; Legume ++ (I eat in the Legume Bar - The Butter Joint. Bar menu excellent). The Porch in Oakland - excellent burgers, pizzas, general good food. Friends say Spork in Garfield is great. Haven’t been.
These places are mostly informal, friendly, and reasonable.