Location is very convenient for Seocho, Seoul Arts Center and the surrounding area (with about a bazillion restaurants), and Nambu Terminal Subway station is a 2-minute walk. Also easy access to/from Incheon Airport via the Airport Bus (6016), which originates at Nambu Terminal.
Be aware that this is a love hotel. It also works perfectly fine as a cheap and functional hotel for a week-or-so business or tourist stay, but understand that many people are there for, um, amorous activity, so not good for kids. Also, although the room was supposed to be non-smoking, there apparently are no non-smoking rooms. Finally, as is the case with many Korean hotels, the bath/shower has no curtain, so the entire bathroom floor tends to get wet unless you're very diligent. If you're OK with all that, and you want a cheap, no frills hotel in a very convenient location, then it's fine.