I've been working as a scribe in the Emergency Department for around 5 months now. Personally I love it, but it is not without its downsides. It is great clinical experience, you can't get too much closer to medicine. I enjoy following the doctor's around all day, seeing every patient with them - the doctor patient interaction is an invaluable thing to watch. You learn a lot of basic medical terminology and pathology. You get to see people in a vulnerable state and attempt to emphasize with them. You get to hangout with smart people all day and develop professional relationships. Working in a hospital allows you to develop your professional persona.
With that said, I believe the hospital and physicians you are placed with have the ability to make or break your experience. I got really lucky with the place I'm at. All the physicians are great, my scribe manager is really cool and relaxed, I send her the days I can work and she works with that. The pay is not great. After the first few months the work becomes monotonous. Its a big time commitment during the semester.
I don't know what your other opportunity is, but this has been my experience with ScribeAmerica. Good luck!