Level 3 is the main living quarters of the family. This is the only level that is separate from the guards towers, and gives total privacy. In this instance, I'm not including a roof level, given the simplicity of the design and to save space for more important maps.
Of note here is the two outer buildings, of which the 3rd level is shown. Both are open air structures and thus no roof is needed.
Presented below is the third floor of the Castle Complex: