How is the town of Preston described in the novel, What About Grandma?

Life in Preston, whose main street is "all of two blocks long," is like life in many small towns almost anywhere in the United States. Residents of Preston have lived there most of their lives and they know and trust their neighbors. Grandma's doors, for instance, are never locked. Preston is not only a small town but a reasonably affluent one, and Grandma is a lady of considerable financial means. She owns a large part of Preston, and she and her friends have lived lives that afforded time for pursuing their hobbies as well as for making a living.