Space is the key, i.e. space for a wheelchair or walking aid and/or space for a carer to assist! As Nick says above, there are lots of nice fittings that are not necessarily marketed as accessible, but do the job and still look good (nice lever taps, nice sinks that can be wall hung so have wheelchair space underneath). If grab rails are needed, you can get some nice metal and even timber ones, or there are some on the market that have dual purpose as towel rail or loo roll holder, so your walls aren't littered with lots of rails etc. I also think it's nice to design the furniture/ fittings that can double as surfaces to steady yourself, like a stylish bench which can help with dressing and undressing. I would go for a wet floor shower for accessibility, either with a stylish fixed bench or your parent may need a specialist shower chair (which would be removable so not a 'fixture' of the bathroom). There are lots of specialist baths out there, which are pretty expensive and can be a bit institutional looking but some nicer than others so definitely worth doing a bit of research. A shallow standard bath designed with a flat section of boxing at the end of the bath which you can sit on to then swing your legs into the bath would be a minimum. Or there are also specialist sling/seats accessories which can help lower a person into the bath but can be removed so aren't a permanent fixture in the room.

Haven't seen in the finish shown before and looks great! https://www.axor-design.com/en-int/articledetail-axor-showerselect-showerselect-thermostatic-mixer-softcube-for-2-outlets-for-concealed-installation-36707000.html

Hope the baby did not go with the bath....

Hi I am looking at refurbishment off bathroom and wanted to ask which wall tiles will look best as I am having luxury vinyl fitted