I kept a wormbin in my studio apartment in Seattle, and can think of tons of little tips.
The biggest is: sometimes it takes awhile for the wormbin's ecosystem to kick in. Once it does, it isn't smelly (except for corn stalks for some reason, they always make it smelly). Until the ecosystem starts working well though, when in doubt, when things smell, just keep topping off with shredded paper (NYTimes is best, less color) and loads of
coffee grounds. You can effectively cover up the smell with coffee grounds. And it Will work out its own kinks, just give it time.
Make sure your air holes are small
enough so fruit flies can't go in and out, but numerous enough so the worms can breathe.
And in the summer, think of your darkest, coldest spot. In my sunlit kitchen I was constantly trying to make my worms comfortable. They'd get so hot they'd crawl out and then crisp up on the floor. A sad sight to come home too.