It's a matter of opinion, but the West End of Vancouver, BC would rank high in my book of livable spots. Big apartment buildings with comfortable apartments and condominiums. The views are spectacular.
Open space is easy to get to.
Large unbroken green spaces are a few blocks away. Everyone doesn't have to have their own yard. There is both community life and open space with-in an easy walk from the front door. No wonder the West End is so expensive. Few have the privilege of living in such a neighborhood, but more neighborhoods could be built like this.