An enjoyable read: the world of Stein and Toklas seemed to revolve round anyone who was anyone in the early 20th century art world, and the anecdotes about famous artists will doubtless appeal.
Ultimately, though, I found this book unsatisfying: we don't really get to know much about either Alice, Gertrude, their relationship or their friends. The name dropping - "Picasso called by for tea" "Man Ray came to photograph Gertrude Stein" etc - gets rather tedious, as does Toklas's hero worship of Stein (i.e. Stein's own consideration of herself as a genius).
I much preferred the later "Alice B. Toklas Cookbook", writted by Toklas herself after Stein's death: although containing recipes (most famously "Hascish Fudge") it is mainly an account of their life together in occupied France.