Might be worth parling up on the street for a few hours in the evening, particularly late on a Friday or Saturday, just to check that it's not being used by hoons, drunks, etc.
Having just looked at in on Street View, it's clearly not a hoon street (thanks to speed bumps) and there can't be too many drunks in Travencore.
What about noise from Citylink? Also, that's right by the tooth pick, might there be light pollution at night? Lots of mozzies from the ponds at the base of the tooth pick? (I'm just clutching at straws here)
What about the hospital at the back of the houses? Goodle Maps lists it as Royal childrens Hospital Mental Health Service. Obviously mental health hospitals aren't the horror stories they were many years ago, but maybe that's an issue?
I've wondered for a while whether Travencore values suffer due to the name - Travencore just doesn't strike me as nice a name as Moonee Ponds, Ascot Vale, Parkville, etc Just a thought...