Complex sentence: Women's dresses that show the ankles are considered quite daring, however hotels seem to turn a blind eye to male and female guests spending the night in each other's rooms, as long as they do it discreetly.
Split into simpler sentences: Women's dresses that show the ankles are considered quite daring. However, hotels seem to turn a blind eye to male and female guests spending the night in each other's rooms, as long as they do it discreetly.