Look, if you haven't read any of the 44 Scotland Street series, you're missing some beautiful writing. Alexander McCall Smith is such a wonderful observer of life and its idiosyncrasies and he expresses these so cleverly through his characters.
This is the tenth book in the series. You could start with The Revolving Door of Life but I don't recommend that. Start with the first title (44 Scotland Street) to discover the gently intertwined lives of the residents, all described charmingly by the author.
Delightful yarns, amusing stories and fascinating glimpses into McCall Smith's Scotland. What's not to love?
You can read more about The Revolving Door of Life on Goodreads.