The castle was great place to spend beautiful summer day for us us an adults and for children as well. Children even managed to act decently a part of this about an hour tour guide that we bought. It was great to hear and see the place with a guide.
You can spend your time freely there as well, and there are space for children to explore this exciting place. Of course you need to be couses. The castle is on the island and there are water all around it and you can find little dangerous spots with energetic kids.
I think the most memorable experience for the kids was that they found a death bat around one small corner inside the castle.
It was fun day.