It's not bad. It's not as natural as UCSC, or as grand as UC Davis, but you can have a nice walk to class on a well maintained campus. There have been a couple violent crimes lately, but I don't think any more than a normal big city downtown.
Sorry for the CRAZY delay on this reply, but I go to SJ State too. I live somewhat nearby, but I'm moving a little further away (crime rate sucks over here).