Pros:
Well marked, easy to navigate course in the middle of a beautiful park! If you came to play the course, what you will remember is the park. Good variety of shots, hyzers, straight "lazer" shots, and anny's throughout the course. Lines are more difficult than they look due to the extremely short distance on the front nine and low ceiling tight shots on the back nine. Locals are extremely friendly and courteous, only had one problem with playing through a slow group, but it was a 5 year old kid and his mother, so we didn't feel bad. All shots are par 3 (thank God they didn't try to call any of those 4's) and there were beautifully designed fairways with lots of landscaping and good quality baskets. Good use of space with what they had, when you try to take too many liberties with such a small playing area you can end up with some dangerous shots for the other players/pedestrians.
Cons:
You have to pay 400 yen to get into the park, but it's totally worth it to see this place. The holes are short and a few of them are way too easy given the distance off the tee. I think I only pulled out my driver on 4 holes; most of my tee shots were with a wedge. Course was pretty busy even in February, and I hear it is packed with players and pedestrians in the summer.
Other Thoughts:
Fun course, not much repeat playability in the front nine, but the back nine makes up for it. Best course in the area by far