Not only students but also the big public can go there and eat. You can check the daily menu's online and choose from many locations. Vegan options are clearly marked and available in many of their outlets. You can have a nice peek into Finnish student life and see how they are pampered compared to many other countries. Not junk food but healthy casual food for good price.
You order the portion from the counter and pay for it. After that you can take as much salad and bread as you want. There are also vegan spreads available.
They serve you in English as well.
Cons: no gourmet options