We love Radicchio, but they don't take reservations. Okay if you're going early or at an off hour.
Some that we've been enjoying lately:
August, 13th and Wharton (not open Sundays) - love it!
L'Oca, 20th and Fairmount - small menu, sooo good! Try the chicken.
Tre Scalini, on Passyunk Ave near Broad St - everything's good
Nan, 40th and Chestnut - Asian/French/fusion
Coquette, casual French bistro at 5th and Bambridge (has a bar)
Bistro Juliana, Cumberland Ave near I95 - sister to Radicchio, not as crowded
These are all places with street parking.