Not Kredik Shaw.
Now the Palanaeum.
Not the Well of Ascension.
Not the Horneater Peaks.
Not Keep Venture.
Not [REDACTED].
Not Kholinar Palace.
Not Riino's Lighthouse.
This place has a single inhabitant.
This place used to belong to someone very powerful.
This place can help unlock incredible power, for certain people.
This place is occupied by the previous owner's son.
This place wasn't primarily for storing books, but they're what makes it so valuable.
Bonus Clue: The owner of this place is a Worldhopper who has been to Sel and Roshar at least, and probably prefers this to being a farmer.