Hmm safety. I'd say the immediate area is pretty safe. I walk 20 minutes to school because I park in the surrounding neighborhoods. East of campus, north of Anaheim. It's cheaper than a parking permit. There are a few open places there.
I know people live in http://www.bixbyhillapts.com/2/Apartments-for-Rent-in-Long-Beach-California/ and I don't think you can get much more convenient than that.
A lot of people live here: http://csulb.och101.com/North-America/United-States/California/Long-Beach/1718-Ximeno-Avenue-25092/ Convient but not as safe as the other places I've mentioned.
There are some sketchy areas in downtown for sure. SKETCH. But there are okay places in LB proper. There are also some really nice places in neighboring cities: seal beach, rossmoor, Westminster, Huntington Beach. I prefer south of the city because then you aren't fighting traffic on the 405. Realistically, you need a car. And if you have a car, a commute thats less that 10 miles isn't that bad. It's pretty standard for our commuter school.