I always like to do my work, especially writing, when I'm on the bus. It's the best way to be productive when I wouldn't have been doing anything. I'm also partial to spending hours sitting in a quiet cafe using up all their free WiFi! ;)
I like to work from home too, as everything I need is already there and set up just how I like it. But for a change of scenery Chatswood Library is good. They have a heap of desks and chairs there so it's nice and easy to get a spot. And the quiet of a library is always conducive to work.