One of the factors/examples that can negatively affect online reviews from users of vacation rentals is when the bedroom windows have only blinds and no curtains, or the curtains are not of the blackout type, causing too much light to shine in early in the morning and disturbing the user's sleep.
The problem of light leakage in the early morning can prevent users from getting a comfortable night's sleep and can cause both mental and physical stress to the users.
Light leakage can also occur when there is a gap between the curtain rail and the curtain, or when the curtain fabric is too thin.
The condition of the first morning light coming into the bedroom of a vacation home varies depending on the time of the year. The owner/operator should be sure to visit the property first thing in the morning frequently to see if light leakage occurs.