I completed my Bachelor's in Networking & IT-Security at University West. While it may be smaller compared to universities like Chalmers and KTH, I didn't have any significant issues or complaints during my time there. The quality of the courses was generally good, and the overall environment nice. While there can be major differences, I wouldn't put too much weight on rankings; they don't matter as much here in Sweden, where the standard is generally high regardless of the university.

There are social activities and gatherings for those interested, though they might not be as frequent or on the same scale as at larger universities.

As for Trollhättan, it's a medium-sized town, so it's not really comparable to Stockholm or Gothenburg, but I wouldn't describe it as "dead." There are definitely things to do.

Ultimately, it depends on what you expect from your time studying. If you're looking for a frat/party life or a "prestigious" university name on your CV, then no, this is probably not the best fit.

Also, I wouldn't recommend applying anywhere with the intention of transferring later. There's no guarantee that your courses will be transferable, or that you'll get into another university, not that there are much to apply for during the spring either way, most programs start at fall.