Yep, I noticed that. On the original plan that window was a little further to the west and so pulled away from the balcony a little. You're probably still right though - it would cause a problem for the rafters holding up the first floor. Perhaps just another pair of windows one floor higher then? The wall looks very bare otherwise.

I have to say that I am enjoying the collaborative aspect of it - I draw a 2D map and then someone else comes along and does all the hard work! I'll put together a transparent png for the sign but it might be a couple of days before I get it up due to other things. I'll stick to a standard Hart.