I would have to agree with envirotechure...and I would look it like this - if it is sunny, warm and no wind and you open the door/window you will be warm and so will be the room. If it was sunny and windy, the wind will cause a decrease in temperature and you will be cold and so will the room, so sit behind the closed glass window and you and the room will be toastie. If it is overcast and cold, you won't get any heat from the sun, so close up the room and put the heating on or go back to bed and snuggle up. When the sun moves and it is no longer heating you and the room, close the window and door and go catch the sun in another part of the house. I think we all do that naturally anyway, it's just common sense. And in a really hot summer, you will be wanting to shade that room to cool it and yourself - the exact opposite. Obviously, if you have good insulation, thermal mass etc etc the effect of heating that room will last much longer than that moment, but you will still want to catch the sun in winter and you will want shade in summer.

Those will be very helpful as I will use them straight away!!

At least the Crimsafe doors won't take from any design features. What I will throw into the discussion is that you could put your screen door further out in the Entrance area (there seems to be half a metre or so in the photograph) and if they were double frames could latch back when required, rather than one large frame taking up all the space. Just ensure the area is covered, so visitors son't cop a deluge awaiting access. For added security, bolts could be attached to one side top and base and the other frame do most of the swinging.

Absolutely beautiful, the garden compliments the house to perfection, love all elements, the front garden is gorgeous, the star jasmine along fence and the trellis is stunning, the back of the house is so relaxing, just a beautifully thought out design , just gorgeous.