Now I just need to think about what to put there! I'm considering some tree peonies - apparently they're very slow-growing but take surprisingly well to dry summers. I just have to make sure they wouldn't get too much hot afternoon sun. But I don't want to grow anything too big, no point in taking out one huge plant only to replace it with another.
I'm also deciding whether to put a "pond in a pot" in that area. All you need is a large pot with the hole filled in and you can have waterlillies, water plants and even a few goldfish. Yes, I know, I used to have a goldfish pond and I filled it in. But I didn't like where it was, it felt like wastes space. But a small one in this area ... I'll have to think about it.