It's all online now, so don't expect to get a paper form.
What I'd say is, don't get your heart set too much on any one thing (especially not if the thing is St German's, where the ratio of applicants to rooms is something like 7:1). Something basically has to give, and being prepared to be a bit flexible about whether you really need en-suite or really need to be on campus is helpful - otherwise you're just setting yourself up to be disappointed.
James Owen Court is in the city centre, in Sidwell Street (next door to the Odeon). It's worth bearing in mind that nothing in Exeter is all that far from anything else, so not being on campus is not that big a deal (and actually quite handy for shopping and the like).
Actually, if you're after en-suite and don't mind being only just off campus (i.e. over the road) then Northfield is really nice.