Reservations are a must. This place is indeed tiny. Dined here with my hubby and brother-in-law. BIL lived in Japan for a couple years, he said this was the most authentic he's had since he left. We sampled a variety of dishes. The asparagus in bacon was a favorite along with the homemade tofu, potatoes in corn, and the chicken and egg bowl. Pork cheek and grilled duck were the weakest links. The enoki wrapped in bacon was the most interesting.
Check out the bathroom while there, it's definitely unique.