Scott
that green instantly reminded me of #4 at Woodlands in Melbourne - a very short par 4 (about 260 yards I think) but with a very small green. It has not bunkers, so the whole green (what there is of it) is useable. Steep fallaways on the left and right sides, and an elevated front. (I think there is only one way that the surrounds of the green can be mown, because of the slope).
A green can be quite small (less than 300 sq metres, or 3000 sq feet) if it is not under pressure from either:
a) a single walk-off area to the enxt tee, which concentrates wear;
b) bunkers cut very close to the green, resulting in sand splash damage on a small green;
c) any severe slope or spine which reduces the pinnable area; and
d) the availability of light and air must be as good as possible, to enable the turf to survive the higher concentration of usage.
The thing about Woodland's small green on #4 is that it passes all three elements.
At my home club, we have several small greens at around 300sq metres. Those that pass the tests above are fine. Those that don't (eg bunkers in very close proximity, single walk-offs to the next green, some deterioration in light to the green) are constant maintenance challenges.
James B