Very unassuming, tiny, über cute place run by a chic head honcho Noey.
Excellent location and place, and affordable: within 5 minutes of walking distance to two subway stations, vibrant traditional market (really fun to visit) nearby, clean & tidy, quiet (important if you are travel weary like i was), nice rooftop where you can sunbath, read or just chill ( also hang your laundry to dry), lots of chic restaurants, cafes, bars around Hongdae (only 2 subway stations away, approximately 17 minutes away from this place, you can also walk there). Did I say this place is clean and tidy?
Yooginong is not like other hostels i have been to in europe. It's more like a your cleanest friend's house. I love its smaller scale. The whole place is quite tiny but that is the charm of this place. Give yooginong a try if you are in seoul.