with plenty of fresh air because there is a lot of space 通風的;空氣流通的 - (formal)
acting or done in a way that shows that you are not worried or that you are not treating something as serious see also airily無憂無慮的;無所謂的;漫不經心的 - (formal, disapproving)
not serious or practical 輕率的;不切實際的 airy promises/speculation 輕率的諾言;無端猜測