We have exactly the opposite problem. My son and his wife desperately want our old piano. We’d be happy to let them take it off our hands except for three things.
They’ll be moving into a house soon, eliminating issue #2, but until someone solves the transportation problem, the piano stays in our living room.
We brought ours home in our minivan. It even fit crossways between the sliding doors so we could just load it straight across from one side to the other right behind the front seats.
There is a big ol’ player piano in the basement of my mother’s house. Been there for 60 years. I need to get it out of there. But the only way to do it is via the steps. I have no idea how to do it.
How wide are the stairs, how steep are the stairs, how long and are there any turns in the stairs. With a player piano, it might need disassembled(it seems to me they’re heavier than regular piano? Not entirely certain of that). A large(sometimes called upright grand) piano might be moveable with sufficient raw muscle power and one of those small “school size” piano can easily be carried up straight stairs by a team of 4 to 6 people.
Call around to local musical intrument stores that deal in pianos, they will have to folks or know the folks with the know how, and tools and muscles to move it for you.