In my mind, their bedroom would showcase a quirky little struggle for dominance in the relationship. Draco would want to maintain the regal and traditional dark furniture and dressings that he’d grown up in, whereas Hermione would strive for everything to be tidy and efficient. He’d try to slip in snippets of green and silver, as a remembrance of his House colors, whereas Hermione would want things to be draped in more feminine colors. She’d probably even try to coax him into buying a gold and crimson colored comforter, to which he’d profusely protest. Everything would have to be symmetrical and clean, of course—Hermione would hardly tolerate mismatched furniture or things to be left a mess, and Draco would hardly be willing to complain.
It’s okay, he knows she’s a bit neurotic.