Coming from a Korean, this is the best Korean BBQ restaurant in T.O. This is where all the Koreans go. It is managed by a Korean man with a long history of running the best Korean restaurant wherever he went (previously at Seoul House at Orfus Road). It targets the Korean community and not "foreigners" so you know the food will be authentic.
A word of caution to non-Koreans though: their service is also Korean - don't expect a four star restaurant service. That's just how it is in Korea when the restaurant is busy. But think of all the free side dishes you're getting!