I was arranged to check in Room no. 412 on 9 March 2024. As the room was darkness in the day time, I and my wife felt uncomfortable. Under such circumstances, we request your front staff member to change our room to the opposite room no. 408. However, we had to pay additional upgrade charge in the sum of Korean dollar 22,000. I had no alternative but to pay the said sum for the same size room. I have to appreciate the staff of house keeping for the cleanness of my room