What absolute rubbish.
1) I have spent about a fortnight in total staying at the Arthur Vick halls in Warwick, which are supposed to be one of the nicest and most modern. They were about on a par with Durdham Hall at Bristol, better than University Hall, and not as good as Goldney or Woodland Court. If you're looking for modern, self-catering, ensuite halls, Bristol offers accommodation easily as nice as, if not better than Warwick. However, the best thing about the Bristol halls is the wide range available. You can either live in Stoke Bishop, or you can live in Clifton, or you can live in one of the student houses (many of which are as large as halls) scattered around the centre. Unlike at Warwick, there are a wide range of catered halls available. You can go for Hogwarts-esque splendour at Wills, or cheap and cheerful fun at Hiatt Baker or Badock. From an aesthetic point of view, Wills and Goldney beat anything Warwick has to offer hands down, despite being very different from each other. All the Bristol halls are perfectly fine to live in, even University Hall, which is often regarded as being the worst. That's more than you can say for the likes of Cryfield at Warwick. Also, all the Bristol halls have their own bar, which is an important social plus point. The Warwick halls don't all have their own bars.
2) Being awarded "best university campus" is basically a consolation prize. Whilst I agree that the campus is fantastic (I was seduced by it and wanted to go there at one point) it's in the middle of nowhere, three miles from Coventry, which isn't even worth going to anyway. So when you move out of halls, you have to live either in Coventry or in Leamington Spa, which isn't exactly the most happening place in the world either, and you've got quite a long commute into uni in the mornings. Being on a university with a great campus is one thing if you're at Birmingham, for example, which has its own train station, enabling you to get to the centre of one of the biggest cities in the UK in a matter of minutes. But at Warwick, the campus just gets pretty monotonous. You might think it's great now, but after three years of nowhere else to go, are you really going to like it that much? I've just been out to Madrid to visit a friend of mine on his year abroad, and I met some of his Erasmus pals from Warwick. I said I thought Warwick was a really nice campus, and this one girl was like, "I am so sick of Warwick I want to scream. I don't know what I would have done if I hadn't been coming to Madrid this year. It starts off great, but after two years of having nowhere to go but the union, you just want to escape the Warwick bubble."
Bristol, on the other hand, has the equivalent of lots of little campuses (Stoke Bishop, Clifton Hill and the main university academic precinct) set in the middle of one of the most exciting cities you could ever live in. It's a really beautiful city, especially when the sun is shining, and there are more pubs, clubs, bars, restaurants and shops than even the most determined slacker could hope to get through in three, four, five, or even six years (for those lucky enough to be doing intercalated medicine)! There's really no possibility of getting bored with Bristol. I really don't see how anybody could possibly keep a straight face when they say Warwick has "a multitude of amenities" as part of their argument for choosing Warwick over Bristol. Warwick has all the amenities of a holiday village; fine for a fortnight, but you wouldn't want to live there permanently.
3) Since I study English, I wouldn't claim to know much about the academic reputation of Bristol vs Warwick for any given course. What I will say is this - it really doesn't matter. I'm not being funny, but it doesn't. Assuming that after your three/four years you're just going to get a graduate job, employers will see graduates from Warwick and Bristol as being on exactly the same level, along with graduates from places like Durham, Nottingham and other similar universities. What sets graduates apart is what else they've done with their three years. Bristol boasts an impressive array of societies and extra-curricular activities, so there's plenty of potential for filling up your CV. There is a really good careers service, which offers loads of help when it comes to applying for jobs. They also put on loads of workshops to help you with essay technique, interview technique, and just about anything you can think of. These are all free. If you want to go into academia, it also won't really matter whether you've done your first degree at Bristol or Warwick, as you can always do your masters or PhD somewhere else.
The only thing I can't say is which of the two courses is more suitable for you. That's something only you can decide.