Pros:
Great park surrounding. Decent walking workout.
Newest installation of baskets are now a year old - it really brightens up the place, and makes the holes easier to see. Signage has also improved.
Added basket placements in the past year, and frequent shifting, make the course play very differently from one week to the next. Some holes play almost a stroke's worth of difference - best examples of this are #2, #5, #13, #17.
I especially like the following holes: descriptions apply best, but not exclusively, from the white tees.
#1: pretty simple short sidehill shot, but it's easy to mess up if you fade too far left or right. Trees on both sides pinch the approach to the basket. Good way to start a round.
#5 with the long basket: You have to keep your drive clear of the line of trees along the left, and the fairway slopes left as well. The approach needs to clear a huge shrub on the left, without overshooting the mark and hitting the road.
#7: Very short and sharp dogleg right. Basket is almost always set in a small clearing at the edge of the thicker forest.
#11: Tight straight drive between two trees. There's a huge fallen tree trunk across the divide, as much as 6 feet high. You have to control a throw that's high enough, but still won't fade off course in late flight.
#13: at first glance it's just a mass of thin trees, but there's a gap that's perfect for an S-curve forehand. Still takes a bit of luck to stay on course, but if you manage to miss the trees it's a great ego boost.
Cons:
Lots of short relatively straight holes, especially through the woods. The same principle applies: figure out your best gap, aim straight, and hope you don't lose much distance, or roll too far off line, when you inevitably hit a tree. 16 is especially short and cluttered with trees for a steep downhill. One of many holes where birdies and bogeys are equally likely at our skill level.
Other Thoughts:
Two clear sets of mostly concrete tees - blue tees are typically a painted plank of wood, and can be very tough to find. The blue tees make the course play significantly tougher - my family always plays from the whites.
Deceptive tee placements include 11 - uphill across road from 10, and 13 - back down across road from 12.
On the other hand, #10 basket was on the short high side of the road when we most recently played. It couldn't be much more than 120 ft. in this configuration, with lots of trees - a bit like navigating putt-putt obstacles.
I've changed my mind about the toughest basket location on #17, tucked into the top of a steep hill, and surrounded by scrub and forest. It's difficult, but not impossible, to get your approach close.
The road as out of bounds can come into play on at least 9 of the holes. Sometimes, especially for hackers like us, it's a matter of how the disc bounces or rolls off the trees.
There's always somebody playing, but never too crowded. It's easy to finish 18 holes in an hour.
Opening two holes have the best view of the city. As others have mentioned, the open slope makes it popular for sunbathers. Walkers can cross the course at any point, but it's never a huge problem.
Schenley and Frick are two great inner-city parks within a few miles of each other.