Hi Lorna, thank you for your feedback! In regards to cleanliness, I always ensure all beddings and linens are professionally washed and sanitized before putting them onto the beds, all flooring areas are vacuumed and mopped with cleaning solutions before each check-in. We apologize if there are minor areas out of sight that we might have missed, we will make sure the room is spotless for our other upcoming guests. In terms of Air quality, the house is has a central air system for both heating and cooling, considering the number of guests staying in our house, we do replace the air filters very frequently to ensure good airflow. Thank you!