Nice model and good artwork. Somewhat of a challenge for me due to the way the model is constructed. I personally don't care for models that have two-part walls; one base wall that is connected to a 'floor form' and folds 'up' and one wall that is already attached to the roof. Could never make that work. So I simply separated the wall-to-roof sections and made a single wall section. I then built the structure and affixed the somewhat odd-shaped roof to it. The result was a seamless structure.
The waterwheel, itself was easy enough as long as you have the patience to cut all of the inserts out.
Recommended to those with some skill and patience.