19 year old student, looking for accomodation in Poznan

I am a 19 year student who is going on a work placement in September of this year and I am looking for student accomodation in Poznan, I am looking for a appartment, studio or studentroom. The accomodation needs to be close to Poznan's train station or easy to go by bus or tram to it. The accomodation has to be near a supermarket to get groceries.