You need local advice on where to live.
If wanting to live in North Leeds near the Uni then Meanwood has some nice bits and is good for trails.
Avoid at all costs the area near Chestnut avenue, its the most burgled street in the UK and is in the centre of a grotty area.
Cookridge and Horsforth is also nice.
If looking for a slightly different feel, try south Leeds. I live in Woodlesford and can be in centre of Leeds in 10 mins by train.
Much of south Leeds is crap though. In fact me and Ton live in the only nice areas!
If minted, then the area north of the ringroad is the area of choice, but its a fortune.
Avoid east leeds (I grew up there…Seacroft/Crosgates/Gipton) as there is nothing for a student other than the 56 bus into the centre of leeds.
Leeds is a nice City and if you come I hope you enjoy it. I had a great time at the university there.