Looks really great. How are you planning to render and arrange this? A whole isometric render, with inset closeups of the rooms?

I ask because it bothers me slightly that I can't see the floors in the hallways due to the perspective. I'm not sure why it bothers me, perhaps because it gives the feeling of obscuring information, and maps are supposed do the opposite. (even though seeing the floor doesn't actually tell me anything I cant know from the fact that they are hallways.) Or perhaps I'm just used to seeing things like this in isometric games and there it actually is important to see the ground since ones characters are walking all over it.