Congratulations! I just found out today I was waitlisted Very bummed, but still hopeful. I just graduated from PSU in December and I also work for the university currently so I only applied here knowing I wouldn't want to relocate any time soon.
Not sure what your budget is, but Portland is insanely expensive. I highly recommend looking into college housing northwest goose hollow. Very close apartments to campus, affordable, and not your typical college party housing situation. Otherwise, PSU is a commuter school so there really is no secret to locating an apartment! Craigslist is a good place to start. If you have any other questions I would be happy to answer since I am a Portland native