Minimalist, functional hotel perfect for 20-30 something aged travelers. If you're expecting higher-end amenities or services or if you are traveling with infants or children, I would recommend looking elsewhere. Unfinished walls and exposed pipes lends to the urban, functional vibe. The single room is roughly the size of a Manhattan studio (read: TINY, but perfect for the solo traveler) and comes with basic necessities: bed, TV, small fridge, safe, shower/bath. But in all honesty, travelers will be out and about a majority of their stay to really care whether or not the hotel is lacking anything beyond that.
The hotel staff are pleasant and accommodating. If you have any questions on points-of-interest, maps, etc., a few know enough English to get you to where you need to go. While check-out is at 11AM, if your train or flight is scheduled for later in the day, they will store your luggage in their office for free. Just ask. Otherwise, fees incurred for late check-out (priced by the hour).
Another great thing about this hotel is its proximity to the subway station and Insadong shops and Gyeongbokgung Palace.
The only negative aspect of this hotel is that the neighborhood is rather sketchy. While the subway is located on one corner, on the other is a mini "skid row" situation. Late at night, you'll hear the continuous shouting for a random transient or argument between nameless fellows. Bring earplugs.