Quite a dilemma. Upstairs 1. Plantation Shutters. - You would have to investigate motorisation options for the cathedral portion of the treatment as you would need some way to open and close them. Periodically they would need a dust and/or wipe which is problematic given the height of the upper cathedral portion of the windows. 2. Split Verticals. Custom made verticals for the cathedral portion of the windows above the existing curtains and verticals replacing the curtains below. Once again motorisation would be an option up above, but verticals are not going to provide the same block-out and insulation benefits that plantation shutters would provide you and would present the same challenges (re cleaning), and aesthetically would not be as pleasing imho. 3. If you are able to still purchase the same curtain fabric as is currently in use across the bottom of the windows, then fixed cathedral curtains could be an option. 'Pinch' or 'Pencil' pleated curtains on a fixed track or headboard. This solution affords you the benefits of salvaging your existing investment in curtains. An important consideration is that the fabric be fully washable and/or dry-cleanable. The solution while still requiring some ladder work is much simpler and efficient when it comes to cleaning as removing the cathedral curtains from the tracks is a three step process - take down, wash/clean, put up. 4. A heavy tint of the cathedral portion of the window would seem an easy and would provide some insulating benefits in relation to heat but not so for cold. Depending on where you are this may not be as much of an issue but that is a lot of window surface area that is currently inflating your heating and/or your cooling bills, so an important consideration in whatever solution you turn to is going to be whether there is a positive return of your investment in terms of reduced heating and/or cooling. 5. Option five presents possibilities of a hybrid solution maintaining elements of your existing curtain investment, but adding a 'look' that would not sacrifice the cathedral portion of your windows to being permanently blocked as is the case with option 3. Of course, a lot is going to depend on the place of your doors and from close examination of your photograph it looks like you have two sets of doors either side of would make this solution impractical, if not unworkable. This is a good example of the application of fixed cathedral curtains with the use of tie-backs affording the benefits of aesthetic appeal and without relegating the upper gabled windows to being permanently closed. Downstairs Downstairs, there would appear to be more options. Closer examination, however, indicates that you have two doors either side of centre. The question then becomes what sort of doors are these? If they are simple sliding doors, or are they bi-fold/stack-a-doors? The options for downstairs could include: 1. Roman blinds. - Thermal lined Soft Romans. The issue with Romans is going to be whether or not you have the room above the windows to draw up the blinds so that you down't have to duck to go outside. Romans typically will draw 30cm/1ft from the top of the window. - Having the room above the windows to facilitate a higher mounting position would allow you to treat the entire window with Roman Blinds as an option in keeping with your open plan living and an implied desire to move away from curtains. 2. Curtains, Curtains, Curtains! - I would have to agree with @chookchook2. Curtain window treatments can be very modern and complete your vision of a modern open plan space. Modern fabrics with bold colours and/or patterns used with or without sheers and using either decorative rods or a single pelmet (box cornice) to tie together the curtains and provide added balance in relation to the shape and form that is projected by the window treatment when viewed from within the downstairs area. Overall, you have simply wonderful, though challenging windows. I would have to agree with @jbantick that 'best' and 'economical' do not usually run together well in the same sentence. Depending on your location, the benefits of reduced heating/cooling costs by selecting a window treatment solution that is going to produce a positive ROI over time should be considered before ruling out a more expensive options.

As a rough guide Caroline we try and use fittings that mirror the basic shape and profile of the room, for example, you have a room with a tall profile, so we would try and use a fitting that also has a tall profile or shape. As Cherel has suggested, using multiple fittings is a good idea because as a whole they create that tall profile and fill in the space. You'll also have a larger range of fittings to choose from. The only issue you might have with this is getting them all centred over the table, which is important (is there any possibility of moving the outlet) A single pendant like the one in your image might work and would be a simpler solution for the off-centre cable outlet however, it would need to be large (at least 600mm diameter).....anything less would be dwarfed.

Hi Jayrees, I totally agree with what Kat had to offer, I would suggest a non geometric pattern on the rug as the floor is already geometric, a light colour and subtle pattern if you prefer a pattern. The mirror should definitely be moved and I would consider a large light print to compliment the new rug and and drapes. It's a pity that the window screen blocks the view (it's a nice view) but the heavy screen is a necessity these days, I would remove the stickers from the glass to help with the openness. Just noticed that you have an air con in the room so you may be able to remove the screen.

consider tall bookshelves around the tv with a big artwork or mirror over the drawers but, depending on the size of the whole room, the drawers and art may suit the wall to the right of the front door and the bookshelves could extend further across the room...check "TV wall" in photos on HOUZZ for lots of inspiration