I've experienced that several times. Personally, I hate it, because I lay my head on the pillow to go to bed, fall asleep, and my alarm is blaring
telling me it's time to go to work. Hate it hate it hate it, seems like no time has passed.
However, the best nights (in my opinion) are when I go to bed, and have a dreamless sleep, just restful blackness, and wake up what feels like days
later, often before the alarm even goes off. I like those nights