My favourite way to dress a bay window is with shutters.
How to dress a square bay window.
Hiya bay windows are lovely features and your suggestion of voiles and curtains could work really well.
For a start choosing made to measure shutters means each panel is designed to fit each section of the window.
There are so many ways to dress a bay window beautifully.
Those windows can all be the same size or the center can be a larger one that is flanked by smaller windows.
The result is something.
I think it would be best to have your curtains as dress curtains though which would stop your radiator from getting eclipsed and you losing much needed heat alternatively shutters are a lovely look and would provide you with a great deal of privacy.
Decide where to put the rods.
Go for a large floral pattern for the blinds to create impact and team with a plain curtain in a toning colour.
From placing panels between each window hanging a rod across the top of the window or having it wrap with the window bay or adding bamboo shades there are lots of options to choose from.
When you are planning your window treatment never assume that the angles are uniform.
The rods to hold your window dressing can be placed in several different locations creating a different look for your bay window.
Choose a roman blind for each bay window dressing and measure them to hang slightly over the frame of the window to ensure the entire glass is covered and there are no gaps at the edges of the blinds.
A bay window is stepped out from the room with side windows that are angled off the center window.