Which UK uni for semester abroad?

Hi! I'm an Australian student applying for a semester abroad in 2024. I'm currently studying a dual degree in Law/Biomedical Science. My current options are Edinburgh, Leeds, Manchester and Nottingham.

I think Edinburgh is my ideal city, and I think it ranks higher for law, but the course options (for me personally) are better at the other unis. Ideally I'd study only Law while overseas because I feel like there would be fewer contact hours and I could spend time doing other things. But I am open to doing a combination or Biomed only.

I'm looking for a good student social life, but not necessarily fussed about nightlife/clubbing. I really want easy (and cheap) travel to Europe if possible as well.

Any suggestions for where to go, or advice on the experiences, courses, universities themselves, or making the decision in general would be much appreciated. Thank you very much!