G'day mate. Not sure i want to reply after the Ashes result but anyway...
The vast majority of first years live in halls, a few get pushed out into university-owned housing, but a small few, usually older or those who live locally, live in private houses. It's rare for first years to live in houses and the uni don't recommend this in order to get used to things first, plus it helps socially. I think they even guarantee halls to all first years. In second year and beyond, the vast majority live in private housing, but some stay in halls/student housing. All halls are predominately for first years.
I personally am going back to Leeds for further study/law conversion next year and am planning to go back to halls (Charles Morris) as a returner. I would recommend halls, for sure. The campus halls are very good. Charles Morris is quite expensive and you do get what you pay for. The other campus halls are all OK. I lived in James Baillie in first year and it was OK, Devonshire (the catered part) has a reputation for being boarding/private school dominated. Charles Morris is very private school dominated too.
Hope that helps.