We didn't get to meet Sharon and Graeme, but their communication was great, we were able to find Gumtree Haven and check ourselves in without any difficulties. I would, however, recommend arriving in daylight to make it easier to find. Gumtree Haven was warm, comfortable quiet and amazingly well equipped. The outlook is beautiful and, if you're lucky enough for Mt Ruapehu to show itself, then it's even more special. We used Gumtree Haven as our accommodation after visiting Tongariro NP and it suited us perfectly; I would recommend it to other couples, families or friends for their stay in the area.