My shoe size is between a 6.5 and 7, so I went for a 6.5 since open toed shoes usually have a lot of space. When they arrived, they were still a little too big to walk in comfortably. I returned it, no problem, and eventually bought another pair, size 6, in the tan color. There's a little wiggle room still, the straps don't really need flex and my foot is just kind of caged in, but it's more of a comfortable roomy shoe now. I would size down further if I really wanted it to feel like my foot is wrapped securely.
Other than that, the color is true to the picture and it looks really nice overall! I originally got the blue, and even that was a really bright color, just like the picture.