there is a difference between a government approved quarantine facility and home isolation. The CDC quote is for home isolation not a quarantine facility.
Fresh air does not disperse the virus, air flow does. But as you are alone in your hotel room you do not need an open window for air flow as you do not want to disperse the virus but contain it.
In the case of home isolation the CDC recommendation about open windows is aimed at preventing people in a household with a infected person transmitting the disease. Airflow is also an effective way to prevent transmission in a work environment.
Two different concepts for different circumstances.
a little reading for you to catch up on reality. Please if you disagree with someone do not become a bully. I am educated and maybe you are, but do not use it as a tool to suppress an opinion that differs from yours.
the idea of quarantine is to isolate you. If you can open your window, why not your door or why not allow to walk around the hotel. If you start were is the end?
There is a difference between trying to avoid infection when more than one person is in a room and a person in quarantine. When a group of people are in a room the WHO's advice is to open windows and increase air circulation. I however have not seen the WHO advising people to open their windows when quarantined. The principle of quarantine is to isolate you and closed windows makes perfect sense. Then again commonsense is in short supply these days.