That model could wear an actual bedsheet and look fabulous. But even on her, that dress isn't that flattering. Advertised to throw over a bikini (meaning, they can't think of a real way to wear it). If I were choosing an after-swim dress, this would not be it.
Or I could tell you how I really feel about it!
Still, there is a role for a cool, loose summery maxi-dress. but I don't like this one.