If you go to Tokyo, you may want to check into 9h—Nainawasu in Japanese—a luxury capsule hotel that is 9 stories tall, storing 125 capsules that use Panasonic's environmental and lighting control system.

According to Panasonic, their system controls lighting to guarantee "good sleeping." I don't know about you but, to me, "good sleeping" means a large bed, a good duvet, and someone special to spoon with all night. Still, if you want to get close to the experience of hibernation in a deep space vessel, this is the place to go. [9hours via 9h]