Not a bad little golf course location on the west side of Madison (Middleton). The price is better than other Madison area courses, so if you want to hit a round but not go too far, this is affordable.
It's an easy course to walk, especially the back 9. The front has a tough climb from hole #7 to #8, but other than that, there's no reason to have a gas cart (unless you prefer it).
Call ahead to make sure there aren't any special outings. I've showed up on a weekday morning to hit a quick nine and have been turned away for an outing I wasn't aware of.
I use the course for my "rebound" rounds. If I'm not hitting well, Tumbledown is good for my ego. Most holes you can play your slice from another fairway. If you're hitting well, you'll be very pleased with your scores.
In summary, while it's not the greatest course, it's an easy and affordable round.
If you want highbrow golf with a strict dress code and PGA rules, go somewhere else. Tumbledown is a nice place for a relaxing round or a group outing.