Kylie and her place are both wonderful. My wife and I spent a week in Tekapo on our honeymoon, and this place was perfect for us. However, it would also be perfect for small groups or families. The common area is very spacious and the kitchen is great and has everything you need.
Kylie was very responsive to all of our questions and gave us all of the check-in information a few weeks before the trip, which helped a lot as we were able to simply save them away and focus on other last minute details before leaving. Kylie has the most extensive "home guides" that we have ever seen - she has binders full of information that span from the town's history to her favorite restaurants. We hadn't made any bookings for meals prior to arriving so we just tried to visit as many of Kylie's recommendations as we could and we were never disappointed.
The location of this house is stellar. The house is elevated a bit on a hill, and (at the time that we stayed) there are no neighbors across the street. Because of this, the house has a very spacious feel when looking out the windows. You get a beautiful panorama view of the mountains surrounding Lake Tekapo from the couch; and despite some trees living between the house and the lake, you can still see the beautiful blue water from the living room. Most other places in the area seemed to have close-quarter neighbors, and it seemed like the spacious feel and views we got at Kylie's place are rare for the rest of the town.
Finally, this house is a short walk from the town center. It was great to be able to walk to dinner or to pick up groceries each night after long drives to and from Mt. Cook. We absolutely loved this place and would stay there again if we manage to make another trip to NZ!