Of course, there are other hiphop clubs that claim to be "legit" around Hongdae, But this place is in the spotlight because of their hit event, Modu-eu Mic(Everyone's Mic), which lays down a plaayform for new rappers and is sponsored by Fila. They've already held their third event and it's free for anyone who wants to participate in this rap battle, even minors are allowed! All that is required is a love of hiphop. Check out their Facebook page(facebook.com/everyonesmic) for more info.
63, Dongmak-ro 7-gil