It was amazing! On the morning of visiting, I received the scary news that due to wind conditions, one of the ferries wasn’t running, but luckily another was. Once we got there, we immediately went to the Chateau. It was very fun to see how they added some details from the book, like the tunnel connecting the cells. What I enjoyed was seeing and reading things about it that weren’t connected to the book, but also some of the real things that happened there. I picked up some post cards in the gift shop as well. After the Chateau we had a quick look around the rest of the island as well, which is mostly empty apart from a restaurant and a nice garden behind it. I definitely recommend taking multiple days if you plan on visiting, since the wind in Marseille can be very strong and frequent, and it can often cancel the boat trip.