We had a lovely stay in Imogen's place. The house is very clean and modern. Everything is included, linens, towels, toiletries and tissue papers. We didnt get to meet Imogen but she has been very responsive. She always replies promptly whatever questions we have. It's easy to get to the house with the keybox. Not many restaurants around the area but we always went to the one across the street. It's good enough for us. The hot pool is appreciated after a full day of hiking. The temperature of the water drops quickly if it's a chill night. (Prehaps we dont know how to adjust) If you wanna do Tongariro crossing, national park is a good place to stay. Shuttle bus takes only 20-25mins to the start of the trail.
Just one tiny thing may concern you. You have to take your own trash to a nearby facility. Imogen gives very clear instruction though. Note that the facility doesnt open every day.