In Phily I think Opa might come to mean good food in a quite interestingly designed small restaurant.
We were an early pre-theater party of four. The start, as in Leban's review, was a bit strange. In an empty restaurant the hostess chose to seat a couple with a very young child directly behind us with a result which exceeded our fears. The cute little one emitted high scary squeals, glasses shattered, regularly over the next hour. Ok, such is life but it did not make the meal more enjoyable.
Drinks and small plates to start. A martini on the rocks came in a glass filled, perhaps packed, with ice. What I could taste of the martini was good and the olives were quite nice. Both the waitress and the bar tender could do nothing but state they pour a portion. The next up martini was very good and proved my point as to portion, as it could not have fit into a glass filled, packed with ice. Oh well the second martini was a good remedy to the initial problem. The Greek bubbly was noted as being too sweet even having chosen the less sweet.
Meatballs and zucchini chips were excellent starters. Some of the tastiest soft textured meatball I have had anywhere. Orders were two of their special Greek burgers, a humus plate and the lamb chop. We both loved the burgers filled with feta, the humus plate was very tasty with pita and four humus choices. The lamb lover in the group said the chop was a good one nicely cooked. Not sure what or if anything special was done to the fried spuds but we both noted their goodness.
A warm friendly interesting spot with good food and reasonable prices near the Avenue of the Arts. If it has not be "discovered" it will be and should be! Shhhhhh!