Are you ok with a step up to it?

https://photos.app.goo.gl/gBEgUXe9wPrUaAiH9

It would not be very high. Maybe 4 inches. My wife has wanted this for ages
- she currently has a (diabetic related) foot problem and cannot weight
bear. Hopefully this will be resolved in a few months - but is spurring me
into action as a seat in a shower would help.