It's cool, the mountain, the fresh air, but nothing more. You've been living in a Seoul-type suburb all your life, it's a wild delight, but if you come from Vladivostok, with your hills and clean air everywhere, it's not impressive.
A very decent hostel in the central part of Seoul, near the train station.
We chose accommodation with a friend with the possibility of paying on the spot, because Russian cards do not work in South Korea now.
The hostess is pleasant, friendly, communicated with us in English.
The guest house has 2 floors, we lived on the second floor.
Wi-fi, TV, air conditioning, private bathroom with shower were in the room. Microwave, cooler and refrigerator in the lobby for public access.
Of the disadvantages, there was only one bed, a second sleeping place - a mattress on the floor and the absence of a sheet and duvet cover.
There were towels, you could change them every day.
In general, it is a budget and decent option for tourists.