hi there thanks for the update. The one flaw in this beautiful bathroom? There's always one thing! Thank you for letting me know about this detail, because I was seriously thinking of doing it this way myself. In terms of your bathroom, I wonder if a very neat bead of silicone on the top only - of the join between the glass and the vanity - could help? This way the underneath is still fee to breathe and not gather gunk. But I guess then you don't get that lovely clean glass feeling from inside the shower.....

Philip it is hard to tell the difference between the two tiles, but the top one looks better due to more subtle pattern. If you darkened an IKEA timber vanity, how did you do it?

the last option with shower and toilet either side of the window and hinged entry door opening towards the laundry cabinet... hinged door is cheaper and offers more privacy and solid core hinged doors will improve sound reduction and the back of a door can support extra towel rack and/or clothes hooks and the tall window needs only be same as top of door height (about 2.1m) and if necessary simple hinged doors on the laundry nook will use the least space and are only open occasionally

I assume the rest of the house is a similar style , and mainly white and off-white walls ? The copper pipe up the brick I would get your plumber to change to polished UNPAINTED copper , and make it a feature , especially if you want to keep the shower doors . I'd change the window sill to a stained darker wooden one , maybe even 25-30mm thick , depending on whether it goes under the window -- a lighter brick with the darker wood and polished copper would look different but in a good way . The toilet and cistern would even suit . BUT the floor tiles have to go -- I'd go a rougher matt charcoal . The shower door I'd keep and polish , but get rid of the extremely dated glass ( yes , I know its period , but . . . . . . ) and go clear , or flat opaque . Some of the tiles in the shower look okay , but I'd use it as a chance to strip the tiles , inspect the waterproofing behind it , change to a mixer , and re-tile , If you think you can 'get away' with just doing that wall ( bit hard to tell from the pics ) go for it -- re-use some tiles maybe , or redo in a very similar style . There doesn't appear to be a wash basin -- you can get some quite nice slim ones , with matching dark wooden cabinets . With copper taps, or a copper mixer ? I assume it is possible to get a copper toilet roll holder too -- stick to that theme , especially if you want to keep the shower doors . There may be a basin outside that room of course , but I can't see one ? I'd go for way more modern squarer skirting , maybe in a dark charcoal stain to tie in with the tiles , window sill and wash basin cabinet if you need one . Copper light shades are trendy , and tie in with the rest of the fittings , but also , for example , 4 lower power downlights as an alternative , would also be a sensible update . There's then only a couple of part walls to do , and I'd probably stick with white or off-white , unless you have another room in a different colour theme that you want to 'reference' .