Hey there!
Freshmen can live in Schwitzer, Ross or Resco (Residential College). Schwitzer and Ross are normal dorms with community bathrooms and Resco has suites - so each room typically has two people in it, and two rooms are connected in the middle with a bathroom for just those four people. (Resco is mostly for sophomores, but some freshmen usually end up there.)
University Terrace and the Apartment Village are both apartment complexes, so those are reserved for juniors. However, they are also farther away from the academic part of campus than the dorms, so people really like living in Schwitzer and Ross during freshman year. I lived in Schwitzer last year and I was so close to everything! I could get to class in 2 minutes and I could see Starbucks from my window. 
Let us know if you have any more questions!