I also have a window like that in our shower - it may, but doesn't normally get wet from the shower. I have put in a thin venetian blind in white (made from plastic) very cheap, under $5. I am in process of making an puffy austrian blind to hang above the window, for a bit of colour I am making it from a shower curtain). It will be there for looks, I may never pull it down. The venetian gives privacy and blocks the light a certain amount.

Since you don't need privacy all the time I will suggest motorised Roman blind, position it high up under the cornice so when it's up it fits above the door, you can choose the width of the folding panels. In addition to this you can have privacy blinds attached to your door panels they could also be on remote control, it cost a bit more but it really is worth it, no cord to pull, it goes up in seconds. This system can be hard wired on your wall like a power point so you never have to replace battery. The other option is also motorised vertical blind like the one pictured here , this way you can adjust light and privacy as you like.

Thank you so much amonymousanne. I hadn‘t Thought of them, with this guy making such an issue over it being common property/not common property from the body corporate perspective etc. That’s a great idea and I really appreciate you taking the time to read my issue and respond to me! I will call them tomorrow. Thanks so much, Donna.

I don’t think that you achieving your goals of a smart use of spaces. If designing for wheelchair access, the bathrooms are not big enough. There is a very good standard on space requirement for wheelchairs. it is gold level of https://dfat.gov.au/about-us/publications/Documents/accessibility-design-guide.pdf Are you working with an architect? Wheelchair access is tricking as one has to think in navigating in a full circle spin. Doorways need to be 900-1000. Bathrooms need to be wet rooms rather than the conventional. There are some great architects in the Wide Bay Area, who will design function over form and at a manageable cost. It may be worthwhile investigating.