Margaret is an exceptionally welcoming hostess: from check-in to check-out over a month, she always communicated with us on a regular basis. She obviously takes pride in keeping her place very clean - the bedroom was a very good size with comfy bed, lots of drawers/hanging space and the ceiling fans in the bedroom and living area kept the temperature comfortable even on hot days. We made good use of the gas BBQ. Wifi and TV both worked well.
Note that Coogee beach is located at the bottom of some fairly steep hills - it took us about 12 minutes to walk down and 15 minutes up - we are two very fit seniors in our mid/late 60s who did the round trip often twice a day. It is possible to catch the 372/373 bus beach side and get off on Carr at Mount, in which case there is only one hill to climb. If you have a car, be aware that parking is limited near the beach with one good size pay parking lot and otherwise luck of the draw on the streets. Much simpler to walk or bus it.
Coogee is a busy place - Mount Street seems to be a well-used route between Rainbow and Coogee Bay road. Traffic noise at night was an issue for my husband (he wore earplugs), but not so much for me.
The bus stop for #376/#377 to Randwick and/or the CBD was just half a block away so very convenient for day-tripping - buses run frequently and all you need is your Opal card.

Hint: If you walk straight down Mount to Coogee Bay road (about 10 min.), you will find a Woollies where we did most of our grocery shopping - on the back of your receipt you should find a 2 for 1 coupon at Gelatissimo just down the road - excellent!