Swansea campus looks very attractive. But I don't know what living there is like.
I think you should answer a few questions, such as the following, and make your mind up then. Nobody will know but you.
-Did you enjoy life in Cardiff?
-Did you enjoy the university of Cardiff Met?
-Do you want to move away from Cardiff?
-Do you have friends here who you don't want to move away from?
-Does Swansea look more attractive to you (both Uni, lifestyle and city)?
-Does Swansea offer better opportunities and a better education?
Those are just a few but weigh it up, pros and cons and then think it over and decide.
Now, perhaps you can help me! How did you enjoy life at Cardiff Met? Could you talk a little about living in Cardiff for your first year? I'd love to hear it!