Why do the lower windows appear gray/silver, the upper windows appear white and the trim in between all of the windows is white? If att the windows and their immediate trim (including betweeen the windows) were gray/silver it would be an improvement in my opinion. Thouse appears to be all white trim except the frieze board apprears to be gray? Consistently inconsistent is not helping.

Like this, but moved down a foot or so to make way for shutters. You'll have to walk to get to the other side of the bed, but it leaves windows and closet with plenty of room. Of course, if you don't like it on the window-less wall, you could keep it where it is, but, as suggested above, just center it between the window and the wall on the right.

I hate plantation shutters but now add drapery and no art between the windows . I always love drapes in a bedroom As for the wall color how does it relate to the bedding since IMO that is where you get the wall color. If the bedding has some blue in it IMO the same shade blue for the drapes could be a nice look.Sort of this look

A door at the bottom of a stair without a landing is against code in most jurisdictions and against common sense in all jurisdictions. Space on a master bathroom counter is more valuable than space in a shower. If there is an exterior wall in a room there should most likely be a window in it. Base cabinets on a wall perpendicular to adjacent washer and dryer is difficult to access the corner. Windows that open to an exterior living space should not encroach into the exterior living space. Closet doors width should not be more than one foot less than the width of the closet. Lay out furniture to scale in every space to make sure they work well and are sized right. Fake dormers are rarely a good idea. Lay out mechanical equipment to scale in mechanical rooms and review with trhe mechanical contractor. Houses should be designed to respond to its site.