Though if OP is thinking about getting a piano to learn to play, I'd honestly recommend just getting a budget/used digital piano over an old secondhand acoustic piano. Almost every old/secondhand piano I've ever played has been in dire need of tuning, and the action on many of them always seems to be incredibly inconsistent - some keys are fine, some take WAY more energy to press from that one time someone spilled a soda down the front and got the mechanisms sticky, some keys are just dead and won't press at all, and almost all the keys are loose and wiggle side to side. They're fine if you already have a baseline of skill (and want a project piano to clean up/tune), but they can promote some bad habits in beginners. Even if you're not spending $400+ for a nicer new digital keyboard with weighted keys, I still think it's better to learn on something with a consistent action and sound.

All of that aside, digital pianos also have the benefit of a headphone jack and are way more neighbor-friendly if OP is in an apartment/flat or shares walls/lives super close to the neighbors.