Bird House Renovation

This wooden post in my flower garden is for training vines on.  The birdhouse should have been several feet higher, and facing more true south (or was it west?) but we hung it up here because we wanted to get it off the shelf where it was gathering dust, a full year after the Earth day celebration at the Audubon Society, and we wanted it out on the garden pole where it would look pretty and might shelter some birds. 
This Spring some chickadees built a nest there, but didn’t lay eggs in it, the year before some house wrens sang songs about it, but didn’t nest there.  This fall, this wood pecker decided to occasionally stop by and enlarge the entrance.  Wonder if he’ll use it?