Which is probably a good thing because seriously, folks, ladders are not for the arthritic.
"Turn the window under the staircase into a cozy reading nook with built-in bookshelves." What window under the staircase? "If it’s spacious enough, a home office can also accommodate a sitting area." That's not a home office, guy, that's a conference room. "It’s a great way of saving space in your home office." And leaves room for the cannon in the front hallway.
Also vertical bookshelves strike me as a very bad idea.