Teppanyaki at Seryna!
My family and I enjoy going to Seryna, a teppanyaki (cooking with an iron griddle) Kobe beef restaurant in Kannai, Yokohama. You will get high quality beef with excellent flavoring and service. The chefs have to train for a decade before being able to cook in front of the customers. In this restaurant, cooking steak is almost like an art - their movements are so delicate and the meat looks so delicious.
Although I've never been to Seryna restaurants in Tokyo, my friends have told me that those are just as good or even better! You can find a Seryna in Shinjuku, Ginza and Roppongi so definitely have a fancy lunch or dinner here while you're in Tokyo.