Enough said here, no eating, sleeping, talking or anything of that sort. Wands are to be given to the professor on duty at the time of the detention.

Okay enough was said before. BOYS ONLY! But of course you get those girls that think it is funny and cool to sneak in hide just to see if a guy talks about them.

Inside, the bathroom's walls, floor, and single sunken bathtub are all made of white marble, lit softly by a candle-filled chandelier that impressed Harry on his first visit. The rectangular tub is the size and depth of a swimming pool, and even has a diving board, but unlike an ordinary pool the tub is lined with about a hundred taps, each with a differently coloured jewel set into the handle. Each tap automatically releases not only water, but bubble bath (a different kind of bubble bath for each colour-coded handle). A pile of fluffy white towels are kept in one corner.

Just a simple little place for the prefects to have meetings. But of course mainly to get them away from the student and younger years that they want to kill. The Head Boy and Head Girl are also included in these meetings.

Simple as it is said. Girl's bathrrom. BOYS NEED NOT TO ENTER!
Either going 'potty' or fixing your hair or make up for a date? Or just some fun girly chatter going on.