I just went last month. It was great to see, as it has features that you won't find in other castles. The guided tour was a little disappointing as it was only 35 minutes so it was kind of rushed. The castle could certainly merit more, but I could see that might be difficult because of the volume of visitors. There was a tour given every 10 minutes. As it was, the following group was constantly waiting for us to vacate a given room.

Just note that this is a major tourist attraction, with many European tourists as well as the groups from China, Japan and so forth.

We had purchased tickets online, which was a relief--it took 5 minutes to retrieve them. The line to purchase same-day tickets was about 2 hours long we were told, with only tickets available for 6 hours later (in line at 1030am for 430pm tickets).

If you have time, the area within one hour drive has other interesting places to visit.