I would also check on attendance policy.
A friend's child was determined to go to Bristol desire a Cambridge offer, as she was sick of studying and was attracted by the party reputation, and decided she did not want to be surrounded by "nerds". (If a potential student really needed a gap year, she was the one.) My friend was very aware of the problems DD had had in her first year in a party flat, but since her DD was likely to be one of the party girls....
She went and was absolutely happy, but roll on January she had failed her exams and had to resit her first year. Her tutor had no idea who she was as she had never attended anything. Yes she was on his list, but he assumed this was an admin error. Second time round and she is doing fine. This is not the case for some others. Members of one of DDs project groups finally went to the administration because they were worried about one student who never turned up. The University checked their records and, yes they were right. The system had not spotted it. (In fairness her course has tightened up since, presumably in response to this and other examples.) Indeed her party flat problems were centred around one student who stopped attending in October and had turned nocturnal, but who was not caught out until the exams at the end of the first year.
Bristol is a super University, but be careful. It is worth thinking hard about the accommodation and talking to accommodation services about options. (Another negative thing perhaps is that as part of their reforms they have centralised these - previously staff knew the flats and residents, and so were good at moving students to better options.) I would suggest Clifton or the City Centre. Stoke Bishop is isolated so you can't easily stay late in the library, go to the SU, or meet friends in Wetherspoons, if you have a deadline to meet or need to minimise the time spent in your flat.
She should think about where her sort of people go. What Universities did people in the year above her go. Where are her friends applying to. The best way to enjoy University is to find your tribe. (Which is precisely why DS was happy in London, yet thought one LSE friend would have been happier at Warwick, and indeed that one friend who was unhappy at Cambridge would have been better off in London.) And, whatever others say or do, attend. Staff are best placed to help if they know you, and it provides structure. And DD would add that it is really important to stay away from drugs.
I agree that lots of people say good things about Bristol's central support. (But would still argue that their SEND support has a long way to go.) The issue was more one of signposting, especially when the student themselves are unaware that they have a problem. Fellow students notice and worry. No hall wardens, no proactive security (unlike other Universities, students need to report noise and drug problems to security, which for the student potentially exacerbates problems. Security themselves seem to have no hearing and no sense of smell.) and no obvious communication channel on the academic side, can leave fellow students feeling both responsible but powerless.
One tip I picked up here, was to get students to share flat mates parent's phone numbers "in case of an emergency". If someone does not leave their room for a week, it at least gives others an option.