There's a coffee shop/cafe on site. Free breakfast is served daily. WiFi is free in public spaces. KOZAYO Hongdae Hostel also features a rooftop terrace, laundry facilities, and a front-desk safe.
Smoking is allowed in designated areas at this 3-star Seoul guesthouse.
The room can hear the sound of other people taking showers and hair dryers, which is acceptable. The bed is comfortable and the breakfast is free. I will come again next time.