Sorry your dad has been badly injured in that way, Graybumb. Not sure if you can force hospitals to find a space where they usually have none, but I agree it's added stress for you both.
Des your dad's hospital have "This is me", a booklet which identifies him to nursing staff as having dementia? They may have it on the more specialist correct wards, and I know from experience you sometimes have to ask for it on other wards. Stressful and hard though it is you have to badger nurses politely to recognise your dad's needs, maybe speak to the consultant on Monday and definitely speak to the ward sister when you get a chance. Some wards at our local hospital allow carers to visit at lunchtimes to make sure food is eaten and drinks are consumed. You may need to make sure meus are chosen to suit what dad actually wants rather than what the nurse thinks he agreed to. Persistence and diplomacy may come in handy if memory of previous visits is correct.
Do you have a carers liaison or a local carers help line which could offer advice?
Sorry, bit of rambling reply. I hope any of that helps you and your dad.