The format of this book is very small which means it would fit into the back pocket of any tourist visiting the City of Light who longs for much more insight than pocket guides from tour companies can even suggest. White writes as well in books like this and his bios of Genet, Proust etc as he does in his inimitable novels. This is a little treasure of a book!
For most readers, the last quality will probably be most important. As this book makes painfully clear, the life of the "flaneur" (or "city rambler") is notable not for its spontaneity, but for its aimlessless. The author's wanderings are reflected in wandering prose, making this brief book an inordinately taxing read. One wishes that the flaneur would simply arrive -- somewhere, anywhere -- and have done with it.