I live in a wonderful neighbourhood that was developed in the early 1900s in an old factory converted to lofts. The workers lived around the area, the GM home was across the street. Similar factories, all lofts now, randomly dot the neighbourhood.
Our "main" street is half a kilometre away and has shopping, bookstores, restaurants. All small businesses.
Several transit routes run by the edges of the neighbourhood.
Everybody walks. Everybody used to walk to work. Streets are almost all one way.
It's cars. It's always cars that make neighbourhoods terrible.