That’s not bad for a start: the room behind hold mysteries. I kinda am tempted to clim them up and discover what’s over here.
Thing is, it looks quite empty. And we have no clue what’s downstairs. You don’t have to make the full room, but if downstairs there was like a garage, you could put a faint light that illuminates behind, or the sides of the stairs.
The room upstairs also feels empty: you could make part of a painting or some furniture. I think even the shadow of a person would suffice. Currently you draw our eyes into this opening, but yet there’s nothing to look at.
Technically, you may want to input the number of sample, as it’s quite noisy.
I quite like the idea so far !