Having been to Spain numerous times,I think that Jamonera has taken traditional
Spanish tapas and put their own spin on it to some extent.
Having said that, I think the results are excellent. I really enjoyed it when I ordered the tapa del dia and got a glass of vermouth covered with the traditional "tapa" holding the food on top!
It's a small place, not suited for a large group but perhaps 6 can be accommodated if you make arrangements in advance.
I loved the vegetable tapas plate and also enjoyed the boquerones very much. The jamón iberico was very enjoyable and served with the same sort of pretzel like nuggets my friends in Madrid served to me with Jamón. The Jamón was pricey... but it is a pricey item everywhere and they served it right!
A less expensive option was the Patatas Bravas, which were very good and come with their sherry based hot sauce. That hot sauce was fantastic. Starting off with the potatoes might be a good option as they are a less expensive dish and will fill you up before moving to the more expensive options on the menu.
I loved this restaurant. Will visit the next time I am in Philadelphia.