I've eaten here a few times. Each time I've had the Okonomiyaki or Hiroshimayaki. It is good. I've never had the original dish, so I can't verify the authenticity of the dish. The meal is good. I don't care for the mayo based sauce, I'd rather use soy sauce.
My only complaint is the beer selection. They should offer the big Sapporo cans.
If you are looking for a chill dinner and want something different, this is definitely a place to consider.