Awesome idea if a bedroom is against a hall closet! Never really use the entire hall closet anyway! Save on the clutter and fill uneeded space in the closet to be used for more floor space in the bedroom!
Wooden coat rack @ DIY Home Cuteness~Looks like art when nothing hanging on it~but makes a great rustic coat/hat rack! Sweet for cabin! Can't wait to make one with a few white birch branches added! Could decorate w/leaf,
a recessed nook becomes a headboard for the bed. I think I'd take the nook all the way to the ceiling to avoid it looking like you put the bed in a repurposed closet; and put the ledge up higher, so that you can recline against the wall