Apart from the environment on the outside (which is somewhat bland), the inside of the castle (where the missions takes place) is very well detailed, with several floors to explore. A careful exploration is a must for this one, given the fact that the upper floors are not immediately accessible, leading to your main goal being stealing the Sword of the Stones. It felt like this fan-mission focuses upon looting per se, hence is not entirely dependent upon reading documents/letters/scrolls in order to progress, hence the interesting, but not magnificent, plot.

Overall, this is the kind of fan-mission which draws you for extensive hours (I've clocked 3 hours), especially if you're playing on higher difficulties given the demanding loot goal of upwards of 10000. Highly recommended.