Quote from ErraticArchitectural peculiarities are whatever you wan to call them are not uncommon. I've seen far worse than windows not being built in places with the best of views. If anything, it adds to the realism factor.
With these sort of medieval towns you also have a lot of the original buildings that have just had extensions built on top of them over the centuries, so you have a lot of weird looking buildings with different materials and shapes everywhere. It does look strange but I agree that it's more realistic for this type of setting.