Angel,
you will be somewhat otherwise pre-occupied for 1st few days, so not a major issue.
On day 3, i had a sponge bath and a shave from the attending nurse, an angel in my book cause it felt so good,
1st shower day 3 encouraged by nurse and done solo, but to be careful initially about wounds, so in hospital not fully gratifying, but you can feel decent again and yes there is bench and all at hospital if needed and pullcord if you need help, as we are a wee bit wobbly 1st few days
As expected, 1st shower at home was absolute bliss, but as someone mentioned not too hot....another very good reason to get home ASAP...but as manual says, no soaking for quite some time and tamp dry the incisions and probably not a good idea to soap up torso for 1st 10 days or so....nurse recommended to me a little polysporin on wounds after shower