We stayed in the cabins which were really clean and well maintained. The bedding was comfortable and there was an airconditioner in the room.
For kids there is a play ground with an actual boat that they can climb all over and a netted trampoline. Down by the water there is a hot tub that sits over the water and a slide that goes straight into the lake.
There is a boat launch but people need to be careful as there are quite shallow areas. There are also kayaks for guests to use. Its very picturesque especially as the sun goes down. There are some food options nearby but we didn't really try them. Its a short drive to Rotorua so plenty of options there.