Now this is a hidden gem of a mod: https://drive.google.com/file/d/0BwEnvR8UijuDMHFXUDJ5WlZiRzQ/view
This mod adds a garden like terrace to the back of the Blue Palace. It has a shrine to Dibella and is just beautiful. It is compatible with the Solitude Public Bathhouse mod I usually shill, but you will need to manually move the door to the terrace with jaxonz positioner:
Like so. Unsure if it’s compatible with Gallery of the Dragonborn or any mod that edits the interior of the Blue Palace though.
The dunmer with Snakestone is Sadure and she belongs to @bravemustaine