Good morning Mrs. Lailiatul, Thank you for the review and apologize for the inconvenience. We would like to confirm that the room air conditioner is working normally. We have checked again and made sure the air conditioner is cold. Regarding the window, our staff has also checked again and made sure the window can be locked normally. We also want to explain that the iron is not listed on our "In room facilities" list. Sorry for the inconvenience, we hope to provide more facilities in the future for customer satisfaction. Thank You.