Stayed in two different rooms. Both had no AC, it was pretty warm and impossible to sleep. If you ask for balcony, remember that you will face construction ( should be done in 2023), rooms with balconies are newer, however if you are tall, bathrooms are uncomfortable. The area is so so, due to many shops that sell all type of things for construction. However , if you like to walk the place is ideal for insadong and myongdong(20-30 min walk).train station is 3 blocks away, so airport bus stop. Hotel has good bakery , pizza , Indian restaurant and 7/11.
Lastly, you can leave your luggage for free in self checked storage room( up to 8 hours) , after you can pay. What I did not like was that staff made me book another night, so I could leave my luggage for 3 days.
Will I be back ? Def no, especially after 8 diffident hotels I stayed in and had compared them to PJ.