You could consider ripping out the shower base and tiling the existing 830 wide and extend that all the way to the existing bathroom wall at the opposite end of the bathroom wall. It would create one wall at an angle but with a seamless glass shower screen and a new tiled floor and walls it wouldn't look out of place. That would allow far better body manoeuvring in the shower.

If you can't paint then hide them with white plantation shutters

Houzz has some AWESOME stories on small bathroom ideas! I found these ones super helpful when I was decorating my bathroom (we have a tiny bathroom that 5 of us share!) [Small Bathroom Ideas That Are Big on Style[(https://www.houzz.com.au/magazine/small-bathroom-ideas-that-are-big-on-style-stsetivw-vs~26923088) [How to Gain Valuable Space in Tiny Bathrooms[(https://www.houzz.com.au/magazine/how-to-gain-valuable-space-in-tiny-bathrooms-stsetivw-vs~26923073) [Home Improvement: 8 Small Fixes to Make Your Life More Organised[(https://www.houzz.com.au/magazine/home-improvement-8-small-fixes-to-make-your-life-more-organised-stsetivw-vs~27270177) [Space-Enhancing Ideas to Steal From These Small Bathrooms[(https://www.houzz.com.au/magazine/space-enhancing-ideas-to-steal-from-these-small-bathrooms-stsetivw-vs~50157855) [12 Decorating Tricks to Make Small Bathrooms Work Harder[(https://www.houzz.com.au/magazine/12-decorating-tricks-to-make-small-bathrooms-work-harder-stsetivw-vs~26923107)

I really feel for you. I had a similar experience when a neighbour recommended someone she knew who was 'really good'! He was extremely lazy and, apparently, suffering from depression and he had split up with his girlfriend! He did a dreadful job which took a week - because he was too depressed to work on some days - he only did about half the job and I wasn't impressed. It has ruined my relationship with my neighbour because she knew him to be really good. She won't even come into my place - I assume she doesn't want to see the mess he created! To top it all off (I had paid him cash - fortunately only half of what he 'wanted' (not 'earned') so he wouldn't be paying tax on it )- I didn't get a receipt. He also took my house keys so I had to have the locks replaced. Such a mess and then, I had some tradies through a couple of weeks later for an unrelated job and they asked me when I was getting the place painted? When I told them it had just been done, they really didn't know where to look. I seem to constantly get ripped off, so I'm not getting much done any more - too expensive and depressing.