Local accommodation should be arranged before traveling to the U.S. whenever possible. If you are an undergraduate student and will be living on campus, you should follow directives from the Office of Residence Life. For graduate students, off campus housing will need to be arranged. You can use the SJU off campus housing portal to look for rental accommodation and roommates. Please note that the off campus housing portal may include rentals from all areas of Philadelphia and may not be within walking distance, be sure to confirm the location in relation to the university if it is important for you to live close by.
You can also find a list of local rental options here, which includes transportation options to campus. You should confirm a temporary place to stay for when you first arrive in Philadelphia if you have not arranged permanent house. You can look here for information on local hotels.