Finally had opportunity to get into Stew's self-service garage today, replacing an O2 sensor on my daughter's "new" '03 Beetle. I'd been considering a few projects I wanted to try myself, and decided this was about as easy a repair as I could find to get in and see what the place is all about.
It's located just off 405 in Kirkland, had two 4 post lifts and 5 2 post lifts. Each bay has a wide assortment of handtools as well as air-powered tools. Specialty tools are available as well. In addition there are mechanics that work there who are willing to help answer questions and provide guidance on repairs.
For those that are interested in doing their own thing, but need a large dry place to work, or who lack the tools, or want to use a lift, this seems to be a great solution.