I've lived in shared flats in Austria for the last three years and always had a great time. I'm a good mix of enjoying time on my own and doing things together with friends and flatmates.
I'm rather tidy, but I don't get annoyed if others aren't and if something comes up, I'd rather talk about it openly than let it build up. :)
If a shared flat is purely functional for you, then I don't think we're that good of a match.