We've had it as high as 74 and keep it around 72. DH may turn it off during the day, I don't know.
We're in a house that has two master suite wings on opposite sides of the house. Ours is the furthest from the source of heat, so I swear it's 10 degrees hotter in the summer and now I'm finding it's about 10 degrees colder. Not bad for sleeping in, but terrible to have to get up way early in the a.m. and shower!!
We also notice a lot of coldness around the windows -- we are a single story cinder block home with mainly tile floors, so it *is* chilly!