I always I have a great time bowling at West Seattle Bowl. They have recently remodeled the whole facility and it's very nice. Everything is set up to be family friendly which is important to me since I'm usually toting around at least 2 children. The bumpers on the lanes can be lowered or raised depending on who is bowling which is a plus. That way mom and kids can bowl at the same time with a minimum of hassle.
Here's a link: www.wsbowl.com