1. Good location: 15mins walk to both Darling Harbour Pier 26 (where we boarded Captain Cook Cruise ship to Circular Quay) or China Town (with many authentic Xichuan restaurants at reasonable rates). Closest tram station is even closer 3 min walk only (but we never had the chance to take it)
2. Fully stocked kitchen and bathroom with comfortable towels and all the amenities you need
3. Netflix and Google Home are nice touches especially for families travelling with young children its the most effective (albeit not necessarily the best) way to ask them to behave well in a meal
4. Immediate and detailed response from the hosts who know the neighbourhood and the city extremely well and would answer your questions within minutes

Cons: No "australia standard" gigantic supermarkets nearby. Closest one is an IGA Express 5 min away.