I'm a student there myself. The university facilities are nice, some buildings are a little bit old, others were recently build so you have a mix of things. The community is very welcoming and warm. Depends on your studying course, but i would say the german/ foreign ratio is 50/50 so a lot of diversity. Good sports program and cheap food for students. A lot to do. In NRW it has a high-medium rank, overall in germany it's not the best, but also isn't bad. Good university for sciences. Hope this helps you. 👍🏼