Before you decide what to do with this space, you have to define your needs. What do you need/what are you lacking in your bedroom? Why would you place a bistro table there--are you going to eat breakfast there? I can't imagine doing that but maybe you do. Do you need more closet space? Maybe a window seat? a reading nook? And what do those small doors lead to? More information will get you better advice.

I don’t “need” anything but my room is gigantic and I need to fill the space. This acrylic chair is temporary, I bought a new one, so a asymmetric floor mirrors. These small doors go to the “attic” little space. Here is also how it is the rest of the bedroom part.

I would move the make up table. I would create a little sitting area or reading area there and get a couple of cozy chairs, small table and a lamp. Also add some nice window coverings. In your master you should keep going with your decor and add side tables and a dresser and then plants and others items

Do you need more walk-in closet space? If you do, you could close this off and make a closet.

Put a rug down, add some plants and a chair or two for a reading nook. Paint the doors the same color as the walls. Line it with low shelves and style them.

Where should I move the makeup vanity?

Is it needed? It doesn’t really go with the bed. What is their furniture is in the room?

This picture is missing the nightstands but you can have an idea

So in this giant space, the total furniture is a bed, two night stands, these two chairs and a makeup table?

Do you actually sit here and put on make-up? If so, then keep this area dedicated just to that. It is senseless to add random furniture to this area for no purpose.

If you keep this as a makeup area, do you like the current make up table?

You have the right idea with the white sheep skin rug. Just get a much larger one that covers at least half of this area. Get a tall floor plant to put to the right of the window. Hang large artwork on the makeup table wall to the left of the table. Then this space is complete.

For now yes. I recently moved in. So this is why I'm
Asking for help, because the space is big and I don't know what else to add.

I would probably put some exercise equipment in there!

You don't have to fill every space right away and some spaces can stay empty forever.

Waht possible use would a bistro table have in a bedroom? I would make it a dressing room since you already use it for makeup One of those silly spaces done for no purpose