Michael is a wonderful host who really cares that you are comfortable and settled in the "granny flat" under his house — a very special experience to get to connect with him, unlike some hosts on these short-term rental sites, Michael is a real pleasure to talk to.
I feel that this property is great if you are a visitor/tourist in Sydney, and are comfortable with not being in the 'hub' of everything Sydney has to offer, but rather, within walking/travel-able distance to everything you'd want — including Bondi Beach being about 20 minutes (closer to 18 mins) away, and Rose Bay being about a 25 min walk. When it's raining, this can be a bit of a nuisance. As a remote worker who is not a tourist, the location was a bit inconvenient for my needs, but this was a 5-star stay, with a 5-star host, in a 5-star property.
Make sure to take full advantage of the bus routes nearby, be prepared for a walk, and take note that this unit is 'behind' the house, meaning you have to walk up quite a lot of stairs to get to your unit — or use the inclinator.
One other thing to note is that the door to your room is glass, and there is another unit directly next to yours, with a shared patio outside your room — thus, if you want to ensure your neighbors don't walk outside and see through to your room, you'll need to keep the curtain closed, minimizing the natural light in your room. Something that made me personally feel a bit closed in, but not much that can be done to accommodate this.
Overall, this property is special, the host is wonderful, and certainly worth considering as the location for your vacation to Sydney/Bondi!