Up, up, up! I have 2 sets of stairs in my home and even though one goes down to the basement, for some reason when I think about them I imagine them from that floor going up.
Up and down for me, up up and away for being in my room/office where my PC gear is set up. Down down for bathroom and kitchen. have 48 flights of stairs to do each time. Five bedroom house three levels
When I think of stairs I think of stairs, rather than of doing anything. The stairs I picture lead up, though, but this is probably because it's a more succinct depiction of stairs than a picture of stairs leading down into the floor.
When I think of stairs, I think of going up but it must not be so high because I am always afraid of height. My mum refuses to live upstairs in our duplex home, she says it is too stressful for her.