So I'm thinking for Keeper, Xyxyry, Cone, Tick, and Solari, their rooms look kinda like caves and don't have windows (Cone has a cat bed in Tick's room) with the main difference between the four rooms being the decoration; Keeper has a few trophies and big jewels on shelves, Xyxyry has a weapon rack and the mounted heads of one or two especially cool opponents, Tick keeps a box full of labeled potions and a recipe book so he can make more, along with a corner of the room that is an absolute mess from failed alchemical attempts, and Solari mainly has a huge rectangular treasure chest holding her hoard and working as a table of sorts.