Warmth and Kindness is a really good beginner song to learn on piano.
The biggest challenge with learning the piano is getting the hands to operate independently so they can play completely different parts, but the nice thing about this piece is that it has a simple melody with a lot of holding out of notes, with the accompaniment only coming in while you're still holding a note out with your right hand so you're free to let your left do its thing.
It does eventually get more complicated and force you to do some simultaneous maneuvering, but even then it's relatively simple and beginner-friendly.
It's also emotional enough to impress people when you play it.