I always felt ikebukuro was "least foreign accessible" though - I've done my research and already have some shops and reservations lined up for next week, but I haven't been able to find anything that stands out in Ikebukuro that would be accessible to me, a foreigner with decent japanese. And I browse these forums a LOTI wouldn’t say Ikebukuro is that deep, though. It’s quite visible from the surface.
I would say the bukuro is the tunnel entrance…