Hmm looks vintage! That detail is beautiful. Could you email the old owner of the store?

Flip up and bi-fold are indeed "all or nothing" options that can be tricky to screen too. Both also rely heavily on well-engineered operating mechanisms and as such come with increased potential for problems. I once stayed in a house on North Stradbroke Island which had a large flip up gas strut supported timber framed window over the north facing kitchen sink with views to Cape Moreton. (I now wish I had a photo to share, but sadly I was too much in the moment to take any.) Standing at the sink, looking north over the Coral Sea with Humpback whales breaching in the distance was one of those forever moments. Plus, our elevated situation seemed to reduce the number of insects that came through the unscreenable window. In that case I wouldn't have compromised on spending to get that window out of the way. For just about every other context I would opt for a less complex, less costly, screenable, servery style window.

I assume this is the photo that you have referenced. I googled yellow subway tiles Australia, and came up with these. The website is showing yellow tile with dark grout, but I think it is a similar hand made yellow subway tile, as the one in the overseas photo with white grout.

Is the first pic you posted an older one , maybe off the for sale ad ? It looks several shades yellower , but the gardens are quite different too . So that leads me to conclude it is fading on its own account -- that makes it easier IMO , just do nothing and it'll fade more ! Buttery yellow and brown were 80's , and pretty naff now , but instead of black , I'd go a Japanese Black -- a bit more matt , even blue hues there too -- more interesting , again just my opinion . The terracota does look slightly out of proportion , but lighter walls , darker trim and the orangeness of the terracota for interest would be my go , but then I'm not a fan of too much white on walls -- I'd prefer the 'relaxed casual' of a beige , jap black and terracota to crisp whites . I also assume that timber and the area to the 'right' of the stairs is the area closest to the street ? No matter what you do ( I'd go Jap Black stain on the wood , but do what YOU want ) I'd look at a bark garden or rock garden , with probably cactus and flax and reds and yellows and greens -- the timber looks too much in proportion to the render in the picture , so i'd soften that ( basically hide part of it ) . I like the character and it can get even better -- a great base ! Well done !