Highly not recommended.
First, rather poor hygiene. Dorm bedroom itself was messy and smelly. People were let (regardless of rules) to eat on the huge table provided in the bedroom. Kitchen and living area were messier and smellier, plus oily. The utensil and cutlery were oily after washed. The fridge was over occupied and certainly stink too.
Second, inadequate facility, particularly, restroom. 7 bunk beds, meaning 14 beds, were only equipped with one single restroom (some more with shower and toilet combined). And it’s the only single restroom for dorm in the whole building. Pee, shower, brush teeth, change clothes, all in one. And it’s a mixed dorm with women.
Third, inconsistent service. I said inconsistent, because not all receptionists weren’t friendly and helpful. Apparently, some of them could go missing and leave me hanging for hours while promising to find me a locker. And I suspected the Chinese guy receptionist had his friends around in the kitchen; often a huge gang would come in to cook complex meals (not simple food but huge portions of meat etc), not very typical of backpackers’ style.
That said, point 1&2 were important for backpackers who get a dorm. For standalone room, I don’t know. And the only great thing of it was that it’s ultra close to cheonggu station.