2 families (10 people total) stayed in the group lodge last year and it was perfect for our needs. The lodge has 4 bedrooms, so both sets of adults had a room each and the kids shared the other 2 rooms - it was perfect for that scenario.
The main room is massive, and we really enjoyed the outdoor bbq and pool.
The lodge is close enough to the Prom to use as a base, but is much nicer than the group lodges down at Tidal River.
All in all we had a great time and look forward to going back one day.