This is a hotel shared with other hotels, so the next door could be a room for a different hotel. Anyway, it's located in a lively block in Nampodong that has those outdoor vendors with food (pojang macha). About two minutes walk to bypung (kangtong) market, and two minutes walk to jagalchi station, so it's in a super convenient location.
The lobby is located on the third floor and the front staffs are very friendly. The room is very clean as well with a water purifier in the room.
You can also leave your luggage in the lobby.
The only thing is that the hotel building is not located in a major street, and there are pojangmachas near the building as well as some really old looking buildings, so the surrounding is not "fancy".