Unfortunately I visited this park while it was raining and also while there was a lot of construction and maintenance work being done on the various temples in the park which effected my opinion of the place somewhat. The park is generally well maintained and clean and the various ponds, trees and most importantly temples are great to see. I am told this park is most beautiful during the cherry blossom season but it's a shame you cant experience that outside the specific blooming season. Unfortunately this park has clearly become a major tourist attraction as there are various snack, drink and souvenir shops scattered around the park in addition to vending machines and many tourists visit this place as it even has its own dedicated tour bus parking. This has somewhat over commercialised the park which has resulted in it losing some of its charm and despite having many temples and shrines it's not quite a tranquil experience. While this is not one of the best parks I've been to in Japan I still think if you are in the area the park and temples are worth a visit. Also, FYI the park has a number of public restrooms without an enterence fee, and also keep in mind photography is not allowed at the enterence of many of the shrines in this park.