I think you're on the right track, black and white is a timeless combo, just be careful not to make the space look too cold/sterile, you can avoid this by introducing some timber elements, either through the furniture or with smaller decor pieces, personally I think light/natural timbers work best with B&W, if you don't want timber and prefer to stick to just B&W then make sure you layer the space with different tones and textures, for example a big faux fur white cushion, a plush blanket or rug, incidentally what's the flooring? As for the bed, it doesn't have to match the side tables, particularly if you're set on the white gloss (personally I would go timber/white or timber/black) as a white gloss bed might be too much, black leather will certainly work, white leather too but not with the white gloss side tables, I've also seen a B&W bedhead before which looked great, will see if I can find the picture

Definitely go white with the linen. Always looks good and can be bleached. Add throws in charcoal. Or darkish colours. Temple and Webster have some good options.

You have done a great job so far! A small suggestion, but a dark throw across the bottom of the bed before the seat. Like mohair to give another texture. I would avoid any more of a Baroque feel, it could just slip into looking over done. Like the sheer curtain idea, but maybe have a chintz look side curtain too (non functional, to again create depth). Maybe nothing behind the bed, but soft image on the other wall next to the door, something like a foggy landscape, with a lone tree, so your looking into the image, avoid too ornate a frame, maybe a dark frame so in contrast to the mirror. Replace laundry basket with a softer rattan, limed look. The wallpaper idea is worth considering but tone on tone. Also the current bedside lights are taking up too much room and are the wrong colour shade. I would replace the bedside lights with sconces, raising them will lighten the area, giving some space to the room and beside the bed too. Small shades, in a soft feminine grey chintz (similar to doona) or do the other way - go darker, with dark brass metal work, maybe even some crystals, in a smokey glass, just a touch, might be bead work. Therefore maybe changing the chandelier to dark with smokey glass, I would presume it would draw the eye to it as a focal point. I do love your dark candles. I think the room would benefit from a few darker tones, creating a little more drama and romance. Best of luck!

Looks like a fabulous space with endless options. What is your decorating style? Do you want to add drama? If so, painting or papering the wall a dark colour might be an opton. If not, choose a colour or pattern you like and apply to the wall. You can't go too far wrong with grey carpet and bedding...