Definitely, need to do some very sturdy wall mounts. Like the idea a a shelf w/hooks instead of the regular towel bar! I would do different door knobs instead! And probably need to stain the wood with something water resistant to be in the bathroom.
What an awesome idea in a little room! Stick a mattress in between and you've saved a whoooooole bunch of waste space. *put some pillows on that top shelf, and you've got a reading nook too! the possibilities are endless!!