I love the water features, and think you have a good combo here of garden and leisure use. I think it's harmonious in its execution and divides the space into interesting areas. I think the fence lends itself to climbing plants, too, no?, if you want? In fact, I don't think ANY of the others even comes close to this! And that means I'm not even going to rank the others. I really like this design. Not much grass to cut/water. Caso mai, you could reduce size at least of the round stepping stones, and have a little more grass for kids/adults to lie down on, caso mai, just caso mai.