Thoughts on Cardiff Uni?

I just got an offer from Cardiff for psychology, but for some reason I'm not exactly sold on the idea of studying there? I'm an international student, so I think this is because I've never attended any on-campus open days or heard about what people think about the university.

Another one of my concerns is whether a large proportion of students are also international- The Uni Guide says 13% non UK students, but I'm not sure how that compares or what to make of it.

A few other questions I have- What's the social life of Wales like? Is it really "one of the most affordable cities" in the UK? Which uni is better according to you- Cardiff or Leeds?

Any other information at all would also be great!