Rob-LuLu 4, Merion West 6 and Philly Cricket St. Martins 5 are three more Philly shorties that are fun to play.
I completely forgot about Merion West, which is a wonderful hole bordered by the creek in front. I've only played Lu Lu once, but now that I know what lies up at the blind green I would love another crack at it.
All of these holes mentioned have something (green contours, hazards, natural elements, elevation change, etc.) that tend to over-complicate a simple wedge shot. For me, the 5th at St. Martins lacks any of these so I can't put it in the same class as the others. The green is quite large and generally flat, it's protected from the wind, and the bunkers are rarely in play due to the size of the green. Even a ball that doesn't quite make the green can be chipped up to save par or make an easy bogey. This hole was built in the early 1960's when a few original holes were taken for residential development, so it isn't part of the original Willie Tucker/Donald Ross routing and I believe it shows.