So, if you want 9 hours of undisturbed sleep for a fraction of a Business Class ticket, Singapore Airlines Premium Economy is the way to go! (travelskills.com)
Still, this does not have to mean undisturbed sleep for you. (easybabylife.com)
That meant that she had undisturbed sleep from 9 PM to 2 am without asking her husband to take responsibility at night. (easybabylife.com)