I'm not korean or japanese, so I have limited things to say about this place:
1 - Don't go if you're in a rush. Their service can range from curt to courteous depending on the server you get, but the food is invariably super slow.
2 - Don't go when you're trying to be frugal. It's not a cheap place to eat. The best they have is "lunch specials" with smaller versions of their regular stone pot rice.
3 - Dont' go when you're super hungry for Korean BBQ: it is not all you can eat Korean BBQ.
That being said, the food is actually pretty tasty. The korean BBQ, although expensive for limited portions, is very tender and well marinated, and they clean your grill for you periodically. They can also help you cook it if it's not too busy and you're not sure what you're doing.
I enjoyed the experience of the private rooms (sitting on the floor while eating) and the privacy afforded.
Their Karaoke room was less impressive (no BBQ there) and they closed way too early for any good fun.
As far as Korean goes, I'm not aware of that many options, so you make do with what you have - it's pretty good tasting, but it can be hard on the wallet.