I love the aqua blue and browns you have for this room. Given your furnishings, they have a mid century modern style which you could capitalize on. (see the bedside table in this image is like yours)You can easily create a base of browns and a cream or patterned rug and then find some bedlinens in the cyan/aqua colourhttps://www.houzz.com/products/organic-ironwork-duvet-cover-prvw-vr~501905 and then find a fabric that matches your duvet cover to cover the chair...It would be nice if you could either spray paint the bed (which I think is black metal) a silver metallic colour to lessen a harsh line. I would also remove the shiny sheer drape you have in front of the curtains. Why are they there? You seem to have venetian blinds as well.Can you hang the mirror up higher or is it part of the dresser? The base should be about 20cm from the top of the dresser to create some height to the room. I would also lower or even remove the painting in the room as it is too high...For the other furniture, I would rather work on some simple basics and then we can adjust them around. I think your bed is in the only place it can be....

For a masculine scheme you cant beat choc, navy and cream/white. With natural textures sisal/wicker/weave.

Yes I agree not to paint or add an faux type treatments as over time they will deteriorate and the bathroom will look tacky. My suggestion would be to hang two large rectangular framed photos. Use a light gold colour for the frame and almost silver looking one but you can just see the gold. Keep the framed photos light and classical, not to busy. On the vanity add a tray the same colour as the photo framed or with a mirrored look. Use white fluffy towels and a Scandinavian style light colour timber towel rack. Possibly a gold colour pot containing a leafy green plant. My

Cut some of the really leggy branches off (approx 300mm from the next branch), dry them out for a couple of days then pot them in some free draining soil. Triple your plants for the price of one. Where you cut them off will then sprout, maybe even two or three epicormic buds will sprout to fill the plant out beautifully. Re-pot the existing plant as soon as possible, refreshing the potting mix completely, because it is just about to go into its growing phase as it warms up.