Pros:
The Hardhof course is located in a sport park in the suburbs of Zurich. The setting is nice and the holes are sometimes challenging. The baskets were in decent shape. I played there in early spring, everything was lush and beautiful and the park was very well maintained. Please note that the park facilitates a whole other range of sports activity: several soccer fields, running paths throughout, cross fit obstacles etc, therefore, you could come across other users of the park far more often then with other courses spread across a larger area.
Cons:
There were a few too many blind shots that require a spotter. This was my main issue. Playing alone, I was worried that I would hit someone when throwing around blind corners. Fortunately I had no issue but I wonder how one could play here on a busy weekend afternoon without using a spotter, it would seem a bit reckless to me.
Other Thoughts:
Aside from the spotter issue, it really is a nice course, the layout is well thought out. If you are nearby and have some time to play, definitely check it out.