Not sure if you like to grow herbs, but I grow basil, peppermint, and rosemary in my pots. They don't require a whole lot of sun and then they're useful! Nothing like fresh herbs to spice up your tea or foods. :)

Breaking up the great solid block of colour a little bit helps to hide it. Next is the choice of what to plant. I'm leaning towards: ficus pumila, climbing fig, which can be pruned to hug the fence tightly, Himalyan blue bamboo, (but might sprout on other side of fence as well, so should have a 60cm deep root guard or be planted in pots) or waterhousia floribunda, weeping lilypilly, which can be pruned to a narrow, non-climbable hedge but 30cm might be about as narrow as possible. I'm just a bit scared the bamboo will move into the neighbours yard too...You also have to be careful to not plant anything with massive roots that could eventually crack your pool, and it has to be tough enough to cope with a bit of chlorine... Then, put in a dip line so you don't have to water such a narrow spot. Good luck, and let us know what you decide.

Bear in mind that lawn needs to be mowed. How practical will that be in that tiny courtyard? If you want to remove the tiles I would be inclined to put gravel and stepping stones down with a walkable creeper in patches. There's a good amount of sun there so you should be okay with many choices. Choose a variety that works well in part-sun with a nice fine leaf. Thyme is actually a fantastic ground cover that smells great when you walk on it, tiny leaved, loves to be in dry places and is covered in masses of either white or purple flowers at the end of summer. At the moment your plantings are a bit more spanish than french, which is fine you could take inspiration from Riveria places like Nice. To go a bit more french I would swap out the succulents for either lavenders or roses or both! Both will work beautifully with the geraniums and olive tree. I purchased a beautiful lavender this year called Forte from Bunnings. It's a spanish styled lavender with the big petals on the flower head and is the most vivid shade of violet imaginable. Very fast growing in 6 weeks mine have doubled in size. Nice low mounding variety that will look good in pots. Floribunda roses are ideal for courtyards and small spaces as the bush only reaches around 80cm high and sends our bunches of roses on the bush. Floribunda means abundant flowers. I would avoid hybrid tea's as they are a large bush with loads of thorns. Or a climber would be good there too. My personal favourite is Lady of Shallot. But I also have one called Hot Cocoa which is very special and a floribunda. Roses love courtyards especially near a brick wall that radiates heat onto the bush. It keeps blackspot away because water never accumulates on the actual bush due to the heat. We associate roses with England but actually they come from the middle east and are a hot and dry country plant.

I would work with your cushions, add black accessories for your table, lanterns, paint your pots black, agree painting fence black, black adds a wow factor , an outdoor mat would look fabulous similar to my first suggestion , you could really glam it up, you may not want to go inside.