These are closer to the center of campus but more expensive than Mesa. They usually put foreign visiting students and Americans in the same apartment to provide a nice cultural experience, and they're willing to let grad students live there as well. Costs and living arrangements are similar to the Warren apartments. There are other areas further away from campus that are cheaper than apartments near campus. Hillcrest is also on the shuttle line to campus.
Many students also live in Pacific Beach.
Prices are cheaper than campus, but a bit more than Hillcrest. Pacific Beach has horrendous traffic problems. It also has a very student-like atmosphere. Garnet, the main drag, has a number of nightclubs, bars, etc. A final option is to rent a room in a house, townhouse, or apartment, and share the common areas with other students.