I genuinely can't think of one that finished better. A big part of the art of entertainment is knowing when to stop.
If you look up reviews for any British shows on IMDb, a good chunk of the reviews all say the same thing - "Oh my gaaad the Briddish make the best shows, I just wish they had more episodes!"
Totally missing the point that it was good because it told its story and finished
They can't even bring themselves to say "miniseries", it has to be a "limited series"