The wife seemed so much older than the husband - they were an odd pairing.
The nanny reminded me so much of "Amy" from Neighbours.
The main house is currently for sale and unlike most TV productions, they left everything as it was - including the kitchen crockery on display - for the TV show as it exists in real life, which was a surprise (normally they change a few things around). I can't remember the name of the property now, but its name plaque was shown very clearly as one of the characters was driving through the gate ... I Googled that name, and 'Melbourne,' and it popped up straight away.