Rob's apartment was a great place for our family of four to base ourselves for four nights while exploring central Melbourne - clean, comfortable & convenient; plus good communication with Caroline & Rebecca. Apart from breakfasts in, we ate out; very handy supermarket right across the road for self-catering though.
Weather was great, so we just walked everywhere plus used free trams within CBD. Taxi directly from & to airport was most economical option for us, at about $65 per trip.
We were too busy to try the complex's pool, tennis court, etc, so can't comment on those facilities.