It's a quirky and tasty experience, probably one of the reasons people visit Japan. To consider: serving Ramen only, long cue and none-group-friendly sitting - along a counter, with wooden buffers that partially separate you from your fellow diners. Bottom line: recommended once, because of the unique experience, the Ramen is good, and because the restroom will never runout of toilet paper... :). We were looking for a place to eat near us, saw this one close by and highly rated on TripAdvisor, so went there without knowing what we were in for. The cue on the street consisted just of us and 4 more people, so it seemed weird the doorman said it will take 40min. We believed he was exaggerating. We should have known better than to doubt Japanese accuracy :) It turned out the cue continued on the stairs going down to the sub-street level, and then in the hallway, before entering the rather small dining area. When we finished and went out, the cue on the street was long! I don't want to imagine how much time they waited, but it seems waiting in cues for small dining places is a habit in Tokyo. Anyway, once in, you order and pay through a vending machine (they're simply addicted to vending machines in Japan), where you choose the basic Ramen, and can add to it very few extras. Yes, this place is only about Ramen (which meant we'll have to go to another restaurant afterwards, because one kid doesn't eat noodles...) After that stage, you wait in the hallway, where a staff member - they're not really waitresses - ask you to fill a form with regards to cooking preferences: with oil, little oil, no oil; soft noodles, medium or al dente; Salt, Mild Salt, no Salt, etc. after that you wait some more, staring at an electric board, with small lamps representing the seats, flashing with different lights, to say which guest just started eating, which is about to finish, and which is free. We had to wait extra time, since we were 4, and wanted to seat together, as much as together is possible there. Finally, when called inside, you seat along a counter, with wooden buffers separating you from those dining next to you (you can partially open it, if you're a group). You then see two hands serving your order to you, through an opening in front of you, without you seeing the face of whoever serves it. If you want to order some more, there's a form ready for you to hand to the person behind the opening. Needless to say, it's a very warm and friendly atmosphere... but that's what so special about this place. The Ramen was good and the experience was interesting, but we wouldn't go there again because of no variety and long waiting time.