"This is one of the best castles that Lego has built. We have completed ones from Monster Fighters, Nexo Nights, Vladek’s Dark Fortress and Ninjago .... and this one is the favorite. It has lots of great rooms, a trap door and a great aesthetic design. The only drawback would be if you are sticker averse.....as the set has ~40 of them to apply.
I would recommend this castle even if you are not a fan of the hidden side theme."