A Sanctum at the Brass Embassy

From Fallen London Wiki

Glowing faux-windows of ruby, emerald, topaz. Dials and spring-loaded doors. Abstract plant-patterns in tones of earth and acid. And everywhere, buffed and shining brass. A condign complexus.

This address allows you to keep 5 Opportunity cards in your hand.

Unlock: An Infernally Diplomatic Privilege

To Buy Access: Upgrade your guest room to a Sanctum

OR The Way to Privilege CHRISTMAS