Bettina's place is lovely. Between the tidy kitchen, new furniture, fantastic (and free) washer/dryer and quiet comfy bedroom I was very happy to stay there for longer than a week. Everything in the apartment worked smoothy and Bettina was extremely communicative when I had questions. The sauna, pool and gym facilities are an awesome bonus which are absolutely worth checking out. The proximity to the market Coles allowed food shopping while the countless restaurants as you walk into the CBD provide a great diversity of sit-in and take-away options.
Side Note:
Getting to the place via public transit is actually pretty easy but there is no way I would have figured it out without some trial and error. The key is that the L train from Central (transfer from the airport T train) stops at the conference center and you have to go into the bottom of a the large Harbour car park. Once inside there is an elevator on the right which you take to the fourth floor. Upon exiting you walk to the left until the end of the park and there is a foot bridge over Pyrmont St which goes directly into the 2nd floor of the Oaks Goldsbrough Apartment building. You likely need the RF key fob to access the building internals but you can easily go downstairs and take the elevator to complete initial check-in. Once I figured this out, I was thrilled at how convenient this location is to Darling Harbour and the ICC where I was for the week.