Pros:
Heymann Park is pretty tucked away in Lafayatte if you're driving by on i10. You have to want to get there to find the course. The directions on the course home page are very good though, and I had no problem finding the first tee, even though I didn't know where to park.
The park itself is on some gentle elevation, with long slopes, no real hills, but more of inclines. The trees are ancient oak trees- some of the best trees to play a round of golf through.
I really enjoyed the layout of each holes, bringing in a small pond on the course, making good use of the scattered trees, and woodsy areas. There are two holes in particular by the pond that stand out, a couple long field shots under the branches of the mighty oaks I enjoyed, and even a good hole around a baseball field, which I normally don't care for (though we all have to admit the curve of an outfield makes a good fairway, it would be nice to have a park that has a baseball field NOT have that hole).
DiscCatcher targets and concrete tees are both nice, but are a little worn. But they still get the job done, and have many years left in them.
Hole 10 is probably the most engaging hole, with an easy birdie line over some water I'm sure is shallow but is so dark you will never see your disc.
There's another longer hole where the target runs close to the river, but you can't tell from the tee. That's kind of a con, but the hole is one of the more interesting ones.
Cons:
The smelly dumpster is not just a nit-picky thing. It's pretty bad and there's no way to avoid it.
A lot of the holes are pretty open, especially towards the end. There's a minimal amount of shot shaping, and more pure distance. If you like that then this will probably feel like 3.5 course to you. It would be for me too if the whole course were like the first 8 out of 10 holes. Towards the end of your round you don't really feel like playing it again because of that.
Other Thoughts:
Heymann Park probably gets a lot of bad press from some of the other activities going on in the park. But judging by the smell of those activities wafting over to us while we played, I don't think most disc golfers mind, and several would join in.
I wouldn't mind playing this park again if I'm in town. I was just there for a tournament at Magnolia Park the next day, but I may like this park a little more. The hole designs are a bit better, the tees nicer, and the baskets are reliable. Heymann Park is unique in many regards, but will not feel like a course you haven't played anywhere else.