I've been here a handful of times because it's close to my house. I believe they are legit Korean because they understand almost no words of english.
I've ordered a variety of things before here and theyre standard. However i did order the Budae Jigae dish once (a big soup dish served with meats and tofu and noodles in it) and it's one of very few places i know that actually serve this dish! Definitely reminds me of when I was in Korea!
This is a place i'd come back to when i'm hungry and don't know where to go, or just feel for some good korean food. It's definitely a safe choice for me.