I've taken the challenge of writing some room descriptions for a collaborative list at The Gorgonmilk Blog detailing the inhabitations of Magic Users. I'm intending to use it for a Magic User's retreat in my upcoming D&D game.
23. Threshold of Eternity (thanks to Seventh Sanctum for the name, I used their Room/Location generator)
This is the room of a Magic User who has studied the elements and their relationship to everything in the universe. The double doors are finely-made of an unknown dark wood and have inlaid upon them a diamond-shaped pattern in a silvery metal suggesting the elements. Beside them - conveniently at waist-height for an approaching humanoid, no matter what their height - is a shelf on which sometimes stand a candle and cup of water. Beside the door is a mat, on which, perhaps, a pair of ornate shoes is sitting. The doors will open at a push; but stepping through them could prove hazardous.
enter barefoot, holding one's breath, with a burning torch or candle in one hand and a container of water in the other) will be able to avoid the room linking itself to a far-away location.
Those who successfully determine the combination will find a comfortable suite of rooms; a reception room with couches, bookshelves, and aethereal music provided by elementals of the air, opening onto two bedrooms each with its own en suite bathroom, a dining balcony with views over the streets of the city below, and a small but well-fitted kitchen with all ancient conveniences (hot and cold running water elementals, a tame fire-elemental-powered cooker, a small rock-golem for crushing garlic).
Unfortunately, due to the nature of the room, it is extremely difficult to tell if the wizard has actually left it.