Well Rested (perk)

Well Rested is a temporary perk in Fallout 4. It lasts 12 in-game hours, and is obtained by sleeping in any unowned bed.

Requirements
Sleeping in any bed, not owned by an NPC or settler. In Fallout 4, the Sole Survivor no longer "owns" beds, like in Fallout 3 or Fallout: New Vegas, as there is no purchased property, with exception to the apartment in Diamond City. Any bed not marked for trespassing will work (in the code, it is actually marked for stealing). Rented rooms always work, and beds built by the Sole Survivor in settlements work if no settler has been assigned. Assigning a settler to a bed will prevent the Sole Survivor from using it, as it is now owned. Beds throughout the Commonwealth may or may not work, depending on whether they are flagged for 'stealing.'

Effects

 * +10% XP for a limited time 12 in-game hours.

Bugs
Sometimes both the Lover's Embrace and the Well Rested bonus are given, adding up to a total of +25% experience while they last. Once the 12 hours are over, both perks expire with no known side effects.