That seems like the best way to sleep... don't know it's happening and then wham! you wake up refreshed. Almost like a Borg regeneration chamber.
Unfortunately, the majority of those instances end with me suddenly bolting upright in bed accompanied by many expletives with the distinct sensation that I've missed some important deadline (I haven't). It takes a few minutes to reorientate myself.

Finally something decent I inherited from Dad he was like Homer Simpson when I was growing up (looked a bit like him too) except Dad was a touch more mean. However he could sleep just about anywhere.
Glad you have a loving family, they shape us.