I guess you just have to use your hand to clean the places you normally use the shower head. It just takes a bit more effort to get clean! This would not stop me
Just get a liner shower curtain if you are worried about messing up the one that came with the place. And if the shower head is tiled into the wall that is not a huge job if you can still find one or two matching tiles.
Yeah, I’d go with a washcloth (though keep one you only use for this purpose!). In the rare occasion I do mess, I do exactly that even though I have a detachable shower head, I’d rather scrub myself clean rather than rely on the water, which can only do so much. After the wet wipes I’m already pretty much clean there before I get into the shower anyway. At this point, it’s just a case of getting some shower gel etc on the cloth and making sure to give yourself a good scrub to finish cleaning.
Where’s a Teflon-coated prosthetic butt when you need one?
Is it really not possible to replace the shower head? That seems pretty strange to me, but then I come from a part of the world where 99% of all buildings are less than 50 years old.