As gozomark mentioned in a previous post, anywhere in Gozo is good really and very quite, unless its on a main road or very close to town squares/bars.
So, you have to look a bit around and find a area which feels good for you
Regarding transport, Gozo is very small. For example, it used to take me 15 minutes to walk from Victoria to Sannat. Most of the times I used to get lifts too
Most people know each other here. I used to hate the buses in gozo, non enough routes and frequency, but one would expect this on such a small island with little demand