Architectural interest, maybe?

I'll have to see how this turns out. I have a plan, but I'd like to be able to play with it before it gets set in cement. Bare with me, but the same straight, flat walls on the other floors are great, but wouldn't it be more interesting if there were slight alcoves in each of these two third floor bedrooms, which would provide a bit more space for the bath, which would be a shared bath.

And, no, I don't sleep well at night.