As I mentioned yesterday, this pre-painted model is excellent, the quality of the parts and how they are laser cut is first rate. That said though, there are quite a lot of parts to put together. The construction is not fiddly, though with some of the longer beams and supports you have to be careful when removing them from their frames as they can easily bend or snap (e.g. in the picture above I had to re-glue one of the long beams).
There are three main sections to construct in this model: the base/cellar section, the mid tower/sleeping quarters, which also support the observation balcony, and finally the upper floor of the guard room, with a door onto the balcony, and supports for the roof. (Above and below you can see the three sections before gluing the balcony onto the mid level supports).
Below you can see the three sections fitting together, and finally with the balcony glued on.