Large glass doors will be a major heat leaker... depending on your aspect and the time of the year, leaking heat into the house or out of it. Nothing better than triple block curtains with pelmets (with a top), that go all the way to the floor and extend past the window. Not quite as good thermally but better for adjusting light into the room while maintaining privacy are timber (not plastic) shutters, fitted inside the frame of the window, and again down to the floor... so that the entire window pane is covered when the shutters are closed. The latter would probably best suit your needs, unless your house swings between freezing cold and blisteringly hot.

I also have a window like that in our shower - it may, but doesn't normally get wet from the shower. I have put in a thin venetian blind in white (made from plastic) very cheap, under $5. I am in process of making an puffy austrian blind to hang above the window, for a bit of colour I am making it from a shower curtain). It will be there for looks, I may never pull it down. The venetian gives privacy and blocks the light a certain amount.

I warm my plates sometimes with a damp square of kitchen paper in between. The water in the paper heats up and does the trick. I always do scrambled eggs but I use half power and stir after 45 seconds then after 20 secs and so on until done. I par boil vegetables for roasting and soups to save time. We keep our bread in the freezer and defrost before use, also rolls, banana bread, un-iced cake etc. I've heated up a wet face cloth to wipe my grandkids' faces rather than wait for the hot water to come through. More energy efficient. If my coffee or tea goes cool when I'm on the phone I'll reheat it for 20 secs.

Hi Susan I would not specify shutters for louvre windows. Apart from curtains, another possible option would be a blind (roman, roller etc) outside mounted ie on the the wall, as it’s likely that when the window is closed the lever won’t be an issue, but probably will protrude past the window trim when open. A customised solution could be to mount the blind so it protrudes further out from the wall than normal, which has downsides that should be weighed up for your particular situation and desires. Motorisation will take the effort out of opening and closing blinds or curtains, and it is easier for you to decide now for hardwire motorisation before the roughing in stage. All the best, Louise, Decoro Custom Interiors - Window Treatment Specialist, Sydney