More about University of East Anglia
Did you check the UEA website - https://portal.uea.ac.uk/accommodation/options ?
Basically all of those options are close as they are on the campus, except Mary Chapman Court which is in the city. Also, the University Village is slightly away from the campus, I would say 10-15 mins walk.
Officially, they can stay in your room with you for a maximum of three nights.
Check this FAQ, might be helpful - https://portal.uea.ac.uk/accommodati...esidences/faqs