Do not be deterred by the "fast food" appearance of this place. Our Japanese friend who travels frequently to Dusseldorf recommended it, and it was as great as she said it would be and good value for money. Very friendly waitstaff, delicious meals, and a casual atmosphere.
Definitely wait in line if there is one. This is the fastest service I have ever experienced in Europe, so it was a very short wait.
The only area for improvement was in the cleanliness of the chefs' behaviours kitchen, which we could see through the window while we were eating. Cooking chopsticks were put in their back pockets as they cooked, and this didn't seem so clean.
Even still, I'd for sure go back. Everything else was clean and the food tasted fantastic.
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