Mull

My master bedroom is 12ft by 22ft. I don't need it to be this big so I've thought of a plan to extend the bathroom into the bedroom making it double the size, and using the space next to that as a small walk in wardrobe. If anyone has any better ideas of ways to use this space I'd be happy to hear them. The purple wall at the bottom marked with an X is currently a balcony which I will be shortly bricking up to make room for the bed on the photo attached.