I need to see the floor plan please . IMO this is useless space why not make it part of the closet like a dressing room ,but I need to see the floor plan

Try another photo with the lights on in the closet. A double door to the closet that opens wide may be helpful (see Patricia Coldwell's request for a floor plan). The empty area is a dressing room. You could move your dressers or chests of drawers into this room, add a pouf or bench to sit on, and a three way mirror. Here's an over the top showcase house version:

Atlanta/Buckhead Christmas Showhouse Interior · More Info

Is there a good light in this space? If you are the type of person who likes to pick two or three outfits to choose from, this is a place to hang them (on wall hooks) for consideration. You could have a dresser on one wall and a long mirror on the other.

There is zero good light in space. We will add overhead lighting. I’ve attached two more pictures, I’ll have to draw out a layout when I’m back in front of my computer this afternoon. Thanks for looking :)

Use this space as a dressing room, an extension of the closet. Put the bedroom dressers and mirrors in this space. This will make those furnishing more convenient to the closet, and will make the bedroom feel larger (and maybe make room for an easy chair if you want one in the bedroom). A table lamp or two on the dresser will give appealing lighting, and a harsh overhead will be handy on laundry day.

Think of your absolute favorite dress or scarf -- the one that best brings out your own beauty -- and paint the walls that color. Don't worry if that color is "too" light or dark or strong or pastel; this is just a passthrough space where you can take a little risk.

I think you can make this awkward space into one that is both useful and pleasant. Good luck!

I'd make it function with the closet and as part of it. Maybe you could use "his & hers" closets. He can trek to the back one and you get the pretty one in front.

Each side of this space could be a separate desk area. Or built in cabinets with drawers for storage. Or one side desk area, one side cabinets.

And the back one can be some storage do you need a MI in I refrigerate

A Mini refrigerator?

It may also have been intended as a space for a crib (altho I agree that the lighting plan, lack of windows and layout seem poor)

Since you have a switch for the closet right there, it shouldn't be too expensive to have an overhead light put in. Your closet already looks to be the size of a small room! I would leave it open but do as suggested and add dressers and a mirror to use as a dressing area. Add a small, comfortable chair as a place to put on socks and shoes and a decorative hamper for dirty clothes.

Good photos. The closet looks very well organized and uncrowded.

Is there a switch for an outlet in the extra room? Switched outlets are common in some areas.

My aunt (now deceased) had a similar "dressing room" between bedroom and bath but with a tiny window and built in vanity w/mirror. She had in it along the inside wall a cedar wardrobe and other cedar cabinets she called ?chifferrobe? and "highboy" -- this was in addition to her walk in closet which was parallel to it without exterior wall/window. Her house would be over a hundred years old now so that might have been considered "old school cool".

Would not hang "open" rods in there resulting in your rubbing against your hanging clothes as you walk thru this room to your closet. Instead, add cabinets or build them in.

https://www.vafurnituremarket.com/item/mission-triple-dresser/485497766 

maybe consider opening up the wall to the existing closet, and incorporating this weird space into it. I know you said you didn't want to put doors between the master and this space, but if you use some really nice, glazed French doors, they wouldn't make it look too heavy or dark, but would give some separation between closet/dressing areas and Tremain master.

If the small space makes you feel claustrophobic, you might consider cutting for tall narrow "window" openings in the four short walls.

Here is a crude layout of the room. The house is 20 years old, I think the original owner before us liked lots of little rooms 😆

Agree :)

I'd either move the dressers (setting up a clothing zone) and maybe add an arm chair to the main bedroom, or I'd use the Weird Space for some annex function, such a a reading nook or a desk...

Agree with katinparadise ... fung shui also says you should be able to see who enters your room, can do that if the bed is between the windows...can get a nice sofa or two chairs where the bed is now and have real retreat

Yes, that says "his & hers" to me!

How about switching your walk in closet with the weird space and adding a pair of nice closet doors. Your current closet can become ??? storage room?? Hidden room? Jewelry Vault:)