First and foremost the map is incorrect! After you walk past Mizuho bank (to your right) continue past an intersection and find the Luz plaza. Had a very late lunch here. They have a lunch set from 11am-3pm. And I got the lunch set for 1800 yen. Salad, an extra appetizer (I choose pumpkin), the main dish (vegetable curry) and a choice of tea or coffee. The lunch set makes it easy to order even if you can't read Japanese.
Servings are not big but tasty. The curry was a bit salty that day. Cozy atmosphere inside. Not too loud. Next time I'll try the tantanmen and compare it with T's Tantan (sister shop in Tokyo Station).
Cons: good food, friendly staff, cozy atmosphere