I remember one apartment a friend of mine lived in. It comprised the back third of a one-story house. It had a fairly normal sort of living room, bedroom and bathroom, but the kitchen had been made out of the original hallway leading to the back of the house, with all the appliances and countertops lined up on one side with barely a foot and a half between them and the wall. The fridge and oven doors could not be fully opened.
Oh man, I love crazy stairs. Ridiculously dangerous and extremely ADA uncompliant, but whimsical and playful.
(Yanno, up until you misjudge a step and smash your face into the stairs or go tumbling into the dark abyss when you get up to pee in the middle of the night)
There's a Netflix doc titled something like "the staircase" where a guy got tried for murder because his wife fell down some stairs. Regulations are written in blood, as they say