@aborted
I'm afraid I don't know the local geography of Bradford (Derby is in the Midlands and Bradford West Yorkshire).
A word of warning you definitely shouldn't be walking around the city, especially at night, as a girl-unless you're with other people?!
This city is known to be rough!(As are most in the UK) so which ever place you choose to stay (get a map from the internet to help choose?) I hope you get some kind of transport there and back!!
But I would also guess, as you said, it will be too far to walk it anyway-and when you don't know an area the potential to get lost in a city is great!! We found Bradford very confussing and busy. I hope you can fix up some transport.