These sandals are incredibly beautiful and very comfortable. They are exceptionally soft, so there was no rubbing or chafing at all. The fit is highly adjustable, and the cushioning is excellent. I also love the flexible sole.
They do become slippery when wet, but they dry quickly and keep their shape well. I wouldn't choose them for hiking because they lack lateral support and the foot can slide slightly, but for a hot summer in the city they are perfect.
My foot length is 238-240 mm, and I chose size 38. The fit is very good, with more than enough sole length in front. I have wide feet, so the toe strap sits a little differently than intended, resting partly under my little toe rather than beside it, which causes some pressure while walking (this isn't related to the width adjustment). I would also prefer the heel strap to sit slightly higher.
Because of these very personal fit preferences, they probably won't become my absolute favorite pair. Still, I think they are definitely worth trying, and I would wholeheartedly recommend them to people with average-width feet. They are very well made and feel like a high-quality product.