We stayed at Kookaburra Beach House for 3 nights last week and highly recommend it. Our hosts were very helpful, communicative, welcoming and respectful of our privacy. It was clear that they take pride in their property and the service they provide.
The apartment is spotlessly clean, stylishly renovated / decorated and has everything you could need. We loved the authentic art-deco charm that modern buildings just can't match. It was very safe for our 5 year old although being on the top floor, younger children who are climbers would need parental supervision to avoid any open windows (there are no screens) and note that the stairs to the apartment are narrow and steep (not great for the very young or very old or infirm but absolutely fine for everyone else!). Guests can use the front patio or backyard which are both beautifully maintained and furnished for entertaining. Other thoughtful touches included portable heaters to keep the place nice and cosy on cold nights and ample bed linen/doonas etc.
The location is superb - it's a 5 minute walk to the beach, with loads of shops and cafes on the same street and easy access to the bus to the city which is a very pleasant trip. Coogee is under the flight path for Sydney airport (I think this depends on the wind and which runway is being used) and during our stay, there were brief periods each evening of planes flying overhead which did not detract from our wonderful stay, but it did take us by surprise.
Overall, this is a lovely apartment which we would love to return to during warmer months to make the most of the great beach.