The house is a lovely double-wide manufactured home with a gorgeous view of the golf course, a pond and excellent tropical vegetation close to the lanai. I want a relaxed look so I might try linen shades rather than your other ideas.

HI -- I have the very same bay windows . I put Hunter Douglas wood blinds fitted to the windows and have hanging drape side panels on the side walls on each side of the bay . So nothing hanging in the middle . I have the panels ( 95 inch length ) hung from the full wall height (8 ft.) on a rod that goes across the width of the whole wall. Or you could just have the rod the with of each side wall ,having a finial on the interior ends . So that would be ,two small rods with 2 wall cup brackets and two finial ends . I am not a fan of the shutters because of the cost but mostly because they block too much of the light and view . Have the window blinds and the bay interior the same color .

It 'might' look a bit odd. Why not have a curtain and slide it when you need day light. It will be better if you post the pics of the room.

Hello, The window looks a little narrow but is placed in a really interesting place . You could go for creating a nice little bay window type here .for this you would need to create a sitting using wooden ply slightly uptil cill level and a foam seat mattress of the size. For dressing the window, roll up curtain could work the best here,I will attach some references.  Further if u wish to decorate it more in Roman style you could opt for a three side frame made around the window opening (On the wall) Shivani Chandra, Architecture Student Alittle