The best washer and dryer that will do king sized bedding is Miele’s Little Giant. You need to place a w/d set against a load bearing wall though, unless it’s on concrete floor.

Just curious, why against a load bearing wall?

In this instance, I might recommend our Speed Queen unitized if Miele is out of budget. While not without minor annoyances, it handles all but king comforters with ease, and is built like a tank. It has a shallow footprint at 28” so will look more sleek than most inside a closet. It will, however, be 27” wide and I think the Miele LiGi is 24”? enduring, correct me if I’m wrong.

For a good quality machine, the budget is flexible.

Load bearing wall because it is at the end of floor joists. When you put the front loader in the middle of a joist there is more bounce, is what I'm told, sort of like a trampoline. My Miele instructions state concrete floor or load bearing wall for placement.