Find the red door. Hidden in a side alley just off Flinders lane, is Yu-U. Come here for lunch and expect to have simple, tasty, authentic Japanese cuisine. Their style also resonates through their service and ambiance too. The room is open and clean with spreadout tables. If you're lucky, you could get put in a separate room with the traditional japanese style seating.
Yu-U have a set lunch menu for $18. Booking is a must at lunch time as it gets quite busy and seating is limited.