Haunted mansion interior: staircase hall, dust, one shaft of moonlight
The inside of the abandoned mansion: grand staircase, sheets over furniture, dust in a single shaft of moonlight. No ghosts — the emptiness does the work.
The prompt
Prompt for Midjourney, Gemini or Kandinsky — the interior to go with a haunted house exterior. Paste as one line: interior of an abandoned mansion at night, wide entrance hall with a grand [STAIRCASE: split oak staircase] curving up to a dark landing, dust sheets thrown over the furniture, a chandelier hanging low with half its crystals missing, peeling wallpaper in [COLOUR: faded green damask], warped floorboards, one shaft of cold moonlight falling through a tall broken window onto the stairs, dust visible in the beam, everything else in deep blue shadow, no people, photographic realism, 24mm, f/8, straight verticals, sharp throughout --ar 3:2 --style raw What to change: the staircase can be a single straight flight for a smaller house; the wallpaper colour sets the whole mood, and faded green reads older than red; adding "a single candle burning on the newel post" gives a warm second light source and changes the story completely.
What you get
Six runs, four of them usable, which is a good rate for interiors.
The single shaft of moonlight is what makes the frame. Without naming it you get an evenly lit room that looks abandoned but not haunted. With it you get depth, dust and a reason for the eye to travel up the stairs.
The two failures were the same problem: the model added a figure at the top of the stairs even though none was asked for. A hooded shape in the dark reads as a mistake rather than a scare because it has no edges. If it happens, add "no figures, the hall is empty" — it works here because it describes the state of the room rather than banning an object.
What still breaks: the chandelier. Half the crystals missing is easy to say and hard to draw — expect a shape that looks melted at full size. And the wallpaper pattern repeats visibly in the corners, the same tiling problem every generator has with patterned walls.
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