I love a piano
And I know a fine way to treat a Steinway. Let me immediately recommend the wonderful book Men, Women, and Pianos, a social history of the piano by Arthur Loesser. (At the link, inexpensive secondhand editions.) Open Culture offers a couple of short videos on the making of a Steinway—a piano is a mechanical marvel—and you can see a full-length version in the highly enjoyable documentary, Note by Note: The Making of Steinway L1037 (available on Netflix Streaming, as you see at the link).
Everything in this post is recommended.