"This set is a whole lot of fun, not just in building it, but goofing around afterwards. The floors helpfully snap apart easily so you can actually access each individual room after you've built it, but are secure enough that they won't fall apart. Realizing the mystery of the cookie smuggler as I was building it (hint: study the back of the box carefully!) was surprising after I realized there was no specific smuggler minifigure.
My only complaint is that if you have big hands like me, it can be pretty tough to get in there and move things around after you've built it. Bring tweezers!"