1) room cleaning arrangements in halls.
I think I'm most Unis the students clean their own rooms?
2) what supplies he should bring with him (eg what do shared kitchens have).
The Unis website are usually good at telling you what's in the flat, and then you can work out what you'll need. TSR is also good and there are threads on here with suggestions of what to take.
3) Try to work out if he wants ensuite or shared bathroom accommodation.
En-suite is more expensive and he'll have to clean his own bathroom.
4) Best(cheapest) way of securing travel to various parts of campus.
Where DS is thinking if going, there's a feee bus that does s circuit.
5) Bathroom/ensuite cleaning arrangements and laundry arrangements (if he has to wash his bedding he'll need to bring more linen than they provide etc
Like I said before, shared bathrooms usually are done by a cleaner, en-suite are usually done by the student.
He'll be responsible for his own bedding. You can usually find details of how the laundry operate from the website. Some, like Nottingham have an app that you can pay with and it also tells you when a washer is free.
I think he'd be better asking whether the lectures are virtual or in person and employment rates.