This was our second stay and book 2 bed rooms and was upgrade to a bigger room. The staffs was polite and friendly.
There is a direct bus (6015) from the airport and stop in front of the apartment which is very convenient. It's near to Seoul station Chungjeongo station and Lotte Mart.
We found out that take a taxi to the surrounding area is much more convenient, fast and cheaper especially when you travel with family of four. Overall we enjoyed our stay and will come back again.