Kalyn Selissen stepped into the room that would be her home for nine months and gasped. “Oh my God!” she shrieked. “Look at how small it is!” The room in Sandburg Hall, the only dormitory at the University of Wisconsin-Milwaukee, typically fits three students. But this year, a host of factors has caused a housing crunch on campus. As a result, some singles have become doubles, some doubles have become triples and some triples have become quadruples.