Why locals love it
Musashi serves excellent Sushi in a place smaller than the average Berlin living room. Seating space may be rare, but in the summer there's small tables on the pavement outside the venue which will also allow you to have a chat with the other customers. Maximum value for money.
Why you should visit it
Truly Japanese staff in a truly Japanese place, with sumo-wrestler posters and fish charts on the wall. Highly unpretentious place - it is simply about the food, and not about the artsy knickknack that usually likes to accompany the sushi 'experience'.
Musashi also offers take-aways, which you can just take with you and sit alongside the canal if the place is too crowded.