Consult _The Piano Book_ by Larry Fine, often available at libraries. Doesn’t need to be the latest edition; the “piano blue book” part at the end goes out of date, but the general advice about selecting and owning a piano is timeless.

Consult it •before• you go shopping, and also before you think about exactly where you’re going to place a piano in your home.

It’s a good old-fashioned paper book, and IMO it’s still better and more comprehensive advice than anything you’ll find online. The rest of this thread is just frosting; that book is what you really need to consult.

2/ #piano