In reply to sparkass2:
S10/S11 may not be cheap, but having there for 20 years I can vouch for it being a great place to live.
There is quite a mix of housing - apparently all the wealthy mill/factory owners would build out on the west side to ensure they were upwind of the output from their businesses. Other housing filling in (or in the grounds) has tended to be gradual and therefore less uniform. Plus it's been limited by the Peak, so at Hunters Bar you can less than 2m from the city centre and just 4 from the edge of the NP, and know that it won't change.
> I'm confused if they are desirable, why are students there?
What's so confusing about that. Firstly it's an old university, so was built in the affluent, leafy part of the city. Lots of big houses, great for cramming in loads of students (we used to have 10 next door to us), but in the last few years the student village was enlarged and a lot of former student houses have been sold off or upgraded. Not sure that students were ever all that impoverished, but I reckon there has been a change of culture since loans came in - may as well be 25 grand in debt as 20 grand, so higher standard of accomodation and certainly more of them owning cars.
And finally, maybe one of the reason's why it's desirable is because of the students (and not just from an eye-candy point of view, though I'm not complaining). Students bring a certain vitality to an area, a throughput of fresh faces some of whom will stay. Hard to explain, particularly to some of the local nimbys, but well worth the occasional minor problem.