As Pittsburgh restaurants go, that's still small. And Bellini is so popular it's difficult to get a prime-time reservation, particularly on a weekend night. The restaurant just started serving lunch on Thursday, Friday and Saturday, too, adding more possibilities for people who've been wanting to try Bellini. It can't be the decor. There isn't any.
Walls are a dull tan, much the same shade as an old high school hallway.
It can't be the luxurious table settings. There aren't any. The tables are small, about 2 by 3 feet, I'd guess, and close together. The tabletops are a dark red, wipe-clean style, with metal edges. Isaly's in the '50s.