I forgot to add that stairs may mean transitions, life changes, since we use stairs to move from one level to another.

Often some feelings that bother you, but you are too good at sweeping under the rug will play out through the subconscious mind in dream. But that mind does not use language so all you get is pictures. Objects as symbols of feelings and states.

I sometime write my dreams down. Especially when I feel a sense of "importance" attached to them. Putting them into words sometimes will reveal what your subconscious mind is churning.

As an example. Once I had a dream about a city, there were lots of details, different buildings, things people, statues, and it kinda didn't make sense, but I started the writeup of this dream like so:

"I left my home without a map and no particular destination. Soon I was lost..." BINGO! It's about my feelings of being without a goal or purpose in my life.

and then:

"After wandering for a while, looking at this and that, I found a beautiful house, guarded by 2 golden lions. People who lived there were learned and enlightened, and they welcomed me. And I felt that they must have confused me with someone else". And that part sort of suggest to me how my lack of self-worth prevents me from finding my place (the beautiful house) in life, because even when I am there I don't believe I am worthy.

You may want to try something like that and see if it will click for you. Just write out the fresh dream on paper, 3 or 4 sentences, just how it was and read it back to yourself. Some meaning may jump out at you. Not always.