Not strictly DIY, but not strictly anything else either.

There is an old upright piano (age and condition not determinable by the
unmusical me, although its certainly not in tune and hasn't been tuned in my
care) in my sitting room. It is not mine. It was just left by its owner. I
did contact the owner about it but never got a reply. That was five years
ago.

Its in the way. Suggestions as to what I can/ might do about it ( polite and
practical ones please).