Olalla is a decidedly rural residential area off State Route 16. The most that can be said about crime is that there's probably some meth issues, since it's forested, rural and not impossible to afford. But that's probably why you'd like it. Here's ZIP code-based data:
http://www.city-data.com/zips/98359.html
I'm not sure I'd call it a "neighborhood." As you can tell from the street map, it's residential, but not at all dense. There are "court" areas with many houes on one lane, though, so keep in mind that your neighbors' proximity will vary considerably. Mobile homes will probably not be on that type of lane, though.
I'd say the Bremerton commute (about 20 miles) is 30-40 minutes, and Tacoma (25 miles) is 40-55 minutes.