The curtain behind the headboard is the same concept as the curtain on the stairs, it anchors the space so you can put furniture in front
Give you a little idea of how it could look
Ok, this is too much screen, but you get the idea!
Mesh curtain that separates the space
This screen partially blocks the top part of the staircase- we would do the same
the curtain here allows light through but helps to separate the two spaces and ground the chairs
see how the curtain is behind the mirror? it allows you to hang the mirror in front of the window, which would otherwise look very strange
Mush screen curtain- allows light but still creates the illusion of a separate space/ wall