The Lover Stone (Skyrim)

Effect
15% more experience gained with all skills.

Location
The Lover Stone is found east of Markarth, north of Kolskeggr Mine.

Strategy
The Lover Stone may be useful for those attempting to level skills equally for a hybrid character playstyle; like a "Nightblade" (stealth/magic), a "Ranger" (stealth/warrior), or a "Spellsword" (magic/warrior).

Those with Lycanthropy may find this stone useful,as they cannot gain any resting bonuses from beds.

Using the Aetherial Crown, while having the Lover Stone's effect, unequip it before sleeping. Re-equip it after to obtain the Rested, Well Rested, and Lover's Comfort experience bonuses.

Trivia

 * Lover's Comfort, as normally obtained, is not stackable with the effects of the stone since the effects of the latter are a permanent version of the former's.