Thank you so much for you informative comment.

Yes they are on the opposite side of the door.

And since I am renting would like to not do any drilling in the walls.

I like the idea of fold out stool. Do you think a corner hall tree (something like this https://www.amazon.com/Kings-Brand-Furniture-Pasmore-Storage/dp/B0868WN6SH/) in the 16x16 space and then the stool in the 21x3 space look good ?
Reason: i get to maximize space and can also store keys wallets etc in the same space and then stools fits in the tiny 21x3 space ?