with plenty of fresh air because there is a lot of space 通风的;空气流通的 - (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无忧无虑的;无所谓的;漫不经心的 - (formal, disapproving)
not serious or practical 轻率的;不切实际的 airy promises/speculation 轻率的诺言;无端猜测