Summer in the woods.
The air is pleasant: a little breeze to stir the air, fragrance of wood, humous, and greenery is not too pungent. The light is warm but soft, dappled and greening where it pushes through the trees.
Campanella has his sleeves rolled up while he continues to tinker with the Sanctum. Right now he is out the front, putting up some wind chimes and dream catchers. There is nothing inherently magical about these objects; but they do lend the Cabin a sense of identity and contribute to its disguise. Here is a cabin, in use and used as a getaway from the city - nothing special or suspicious.
As he works he begins to consider that he has been spending more and more time here. His mind turns to the other members of his nascent cabal, wondering if the serenity of their Sanctum will be infectious.