For those who fell in love with Patti Smith due to her previous book "Just Kids," will not find the same type of narrative. This is very much a writer's book, about writing and thinking. Also it's a book about nothing, which for many of us (including me) is very much an aesthetic that one follows. In other words, this is a book that is hard to dislike, and one can only dislike this book, if you don't have the romantic impulse of reading and worshiping your favorite artists. For me, I don't see art or artists in that light. They are not gods, but humans, and that is what strikes my fancy regarding the artist and their role in our world.
If I were you (readers), I would treat "M Train" as a classic. I would recommend this book to romantic girls and boys, as well as a bit of social history through the eyes of Patti Smith. May you sit in that cafe, for a long time.