Good luck with selling it on, unfortunately I often see piano's in a similar condition being given away on Freegle because people struggle to find someone that wants one.
I'd love one but have neither the room nor the skill to play one, all I have is a desire to do so.
SO if I ever do it will be electronic.
There's 2 pianos in my house....I don't play either.
My wife is a piano teacher, so I'm surrounded by music....despite being non musical myself.
The best way to learn an instrument is by having a teacher....my wife has had pupils she has taught from beginner to grade 8.
For the last 6 months, she has been teaching a guy the saxophone - he contacted my wife saying he has always wanted to play....and now he has had lessons every week and can play some tunes.
By the way, the piano is a very demanding instrument, it can play 10 notes at any time....so there's a lot to learn. The sheet music for the piano has 2 lines - one for each hand.
If you are musical go for it.