Transportation
Most Polish towns have well-developed public transport networks. They include buses, trams, trolleybuses, trains, and underground trains, according to the city. Buying a long-term ticket is usually a good idea, as it's difficult to avoid public transportation.
Even if you manage to find accommodation close to the university, it may not be within walking distance of its separate faculty or facilities. Some cities have short-term rental systems for bicycles that allow you to take a bicycle from one location to another.