I stayed at Sheryl's place for Christmas 2017 with my family and my daughter's in-laws, 8 people in total. The place was great, clean, fully equipped, comfortable, and nice. The settings are beautiful, we had dinners and breakfasts outside looking over rolling hills with forest and farmland and heard cows and sheep in the distance. The nearby beaches, Cathedral Cove and and Hot Water Beach are great, spectacular settings and not overdeveloped and overly commercialized.
Sheryl is an excellent host. She reached out well before our arrival with a number of useful tips. She made sure we had everything we needed, including outfitting us with shovels before we went to the hot water beach. It was very nice to talk to her about all sorts of things, she is a very open person.
I would definetely recommend Sheryls place to anybody traveling with a group of up to 8 to Hahei. You will not be disappointed.