Now here is an idea for the wall you face from the entryway! Do a skylight in the hallway and then a living wall to accommodate many of your plants! There are systems to automate irrigation and allow for easy removal / swap-out of plants as it grows!
A full rain shower doubles as a tub feature, completely open to this room. The mirror behind the tub helps to make the space - and the shower - seem much larger than it is. But wouldn't have carpet around! But Beautiful!