My favorite baguette in Tokyo is found along the Chuo line near Musashi-Sakai station. Passage a Niveau does a three-grain baguette that has a lovely crumb with a chewy crust.
The bakery opens at 8 a.m. but the baguettes do not come out until a bit later in the morning. Passage a Niveau is worth a journey across town for. The shop is small but has a selection of both Western and Japanese breads.
It is closed every Wednesday and the first Tuesday of each month. Nearby, the library at the South Exit has a big collection of magazines on the first floor as well as a café.
Passage a Niveau
Tokyo-to, Musashino-shi, Sakai Minami-cho 1-1-20, Taiko Bldg.