Question on aviation forum.
Best answer:
“Near a toilet, but by a window, plenty of leg room, easy to get to the aisle for swift exit, over the wing but at the front, by a top lass & near a sympathetic cabin crew who will keep your glass topped up. Away from children, tourists, drunks, the boorish & the bores.
I have never found this seat.”
You Must Be From Away 
I have NO trouble; airlines always reserve that seat for me!
If you haven’t found that seat dear jb, I suspect that it’s because you don’t travel cattle class often enough.
‘Cause, really, the best seat is 1A.
Ha.