We stayed 3 nights with two children aged 12 and 9 years, at the end of a very busy 2-week trip across New Zealand. The apartment was really nicely appointed, looked like the photos and was competitively priced compared to similar options in Queenstown. Incredible views of lake and mountains from the balcony. Great location, easy drive to downtown or 15min walk. Its quite a hill on the way back, but the kids managed ok. The ad doesn't mention access is via stairs which might be issue for some, or if you have very young children in the apartment.
Only minor issues we had were that the bed in bedroom 2 was made up as a King, despite us advising we'd need to set up as 2 singles. I called the number in the book and a housekeeper arrived fairly promptly to re-make the beds, so it wasn't a major problem. Also, road works had closed off the main street to the area. We figured out a longer way to reach the property but it would have been nice to have been advised this ahead of time.