Same wood as the wall, with triple coat of varnish to prevent problems. Around the faucet, a solid piece of material, perhaps a solid porcelain tile drilled for the taps. Keep it very simple.

See the edging around the top of the tile in the shower? Can I do that to an acrylic wall panel? (I hope this picture works?) Eclectic Bathroom by Chestnut Hill Interior Designers & Decorators MANDARINA STUDIO interior design

My line of thought is remove; shower tray, shower panel/door, make bath frame, add drop in bath, jib/tile around bath frame. can the existing drain be used for the plug and can we just add a tap for th bath? Would just have a shower curtain. Just looking for the simplest way to add a bath to the existing shower set up. Exceptional drawing below: Measurements from left to right: 1780mm width of existing shower: 870mm

I have to ask, do you really need that bath when you have such a tight space? Unless you have tiny children (and remember that's a temporary situation!,) I suggest a larger walk in shower e.g. 1200 x 800 and heated towel rail on the wall nearer the window so its more convenient. Would definitely keep the double vanity for those busy mornings with storage under and you could add mirror fronted cabinet recessed into the wall above the basins to add more storage. Hope that helps!