Last time I was in hospital, the help I asked for to shower never came, they didn't have a shower seat I could sit on (a tiny one with a weight limit stamped on it of 12st. I am considerably more than that!) so I could not attempt it on my own...
No one offered to help, when I complained no one had come to help when I asked I was handed a pack of cold wet wipes (no they couldn't heat them up despite the instructions on the pack to do so) and I had to wait for my OH to come in to help me.
I was in for 10 days, not impressed.
At home, it really depends on how ill I am. If i can't regulate my temperature and our shower is bloody cold in winter, then no - warm wet wipes (the bed bath type not bog standard ones) and water free foam wash stuff will have to do.
I remember vividly, Mother forcing me into the bath when I had flu (real flu, 3 weeks in bed, another 3 not really with it under blankets on the sofa, hallucinating, fevers, chills, the lot).... I vomited in the bloody bath, it was too hot which really messed me up, then when I tried to stand to shower off the vom I slipped and fell out of the bath onto the bathroom floor and she bloody shouted at me!