The student area's of the city is basically anywhere within ten minutes walk of the universities. However most student houses are geared towards multiple occupancy so if you want a house and you want it within [let's be honest] staggering distance of the city centre you might consider looking up along London Road. Going along Ecclesall Road is very student orientated but is mostly bedsits and multiple occupancy houses as I have mentioned. Go beyond Hunters Bar though and there are terraced properties to be found. I'd suggest putting your requirements and price range here on the forum and then some-one may be able to help further.
Side note.... I haven't forgotten about Broadfall tavern and have exchanged several e-mails with Radio two and Bruces henchmen but haven't heard much in a month [time to kick some bottom!!!]
Life, don't talk to me about life