Very clean room, good WiFi but no TV. About 5 minutes' walk from Seoul KTX station exit 3 (not the metro station, which we made a initial mistake), i.e., take the exit nearest to the AREX entrance. Every unit has a computerised door lock so that you need not bring a key with you. They provided corn flakes, toast, instant coffee and bottled orange juice for breakfast at the common kitchen area. Each block has its own common kitchen and a self-service laundry. We only stayed for a night before we fly, but am overall happy with the security, location and convenience. But take note of limited hours for luggage storage and do check with the owner on the opening hours of their office.