Guy posts a long thread at Imgur about what he learned living with a group of girls for a week (doesn't say how many, but I'm guessing more than three.)
Some samples:
(https://i.imgur.com/FhM4CQr.jpg)
(https://i.imgur.com/1RtlbC2.jpg)
(https://i.imgur.com/P2NeYF9.jpg)
You can check it out here. https://imgur.com/gallery/1pPM5 (https://imgur.com/gallery/1pPM5)