I'm not from the ACT, but if there are a few houses where people live here then that seems ok. There is https://wiki.openstreetmap.org/wiki/Tag:place%3Disolated_dwelling but it looks like there are 5 houses here so hamlet is probably correct.

There is the District of Booth at https://www.openstreetmap.org/relation/11911812 but that's just the district admin boundary, the place=hamlet can and should exist too.

It's possible mark this place=hamlet node as the centre of the district boundary, but I'm not familiar with the local situation to comment.