If this home is available, I highly recommend you booking it. The location is excellent to explore the various locations around the Whangarei Heads area (Highly recommend Mt Manaia and the walk around Busby Head and Smugglers Cove).
The house was perfectly set up for a family group with two young children, with a range of games, books, and DVD's for the kids to use. We used the kayak to explore the bay at the doorstep of the house which was awesome. Internet worked well and the shower water pressure was amazing!
Finally, while we never met in person, Rose was a fantastic host and we always had easy communication if needed (we didn't need to but it was great to have it just in case).
If you are looking for a great place in this region, personally I don't think you need to any look further than Rose's Retreat!