The Prefects' bathroom is a special bathroom on the fifth floor of Hogwarts restricted to use by school Prefects and the house Quidditch captains. It is located on the fifth floor behind the fourth door to the left of a statue of Boris the Bewildered, which only opens when given the correct password.
The detention hall can be used for misbehaviour by any Professor. The detention hall is usually only used for lesser punishments - as the Forbidden Forest, and other activites usually accompany the delinquents.
The ballroom is typically used when 'fancy' events are brought upon in school. This gives our students a chance to pratice. However; it is hardly used in the school year and tends to be used in praticing spells at some intervals.
The Cauldron Cupboard is a room located in the castle of Hogwarts School of Witchcraft and Wizardry. It is where cauldrons are stored for Potions Classes - and belongs to our resident Potions master. Mischievous and lovestruck teenagers can be found here at all times - though they tend not to until after hours.
With the detention hall close by; the floor can get pretty rambunctious - especially if a Professor leaves students unattended. The Prefects' bathroom is situated here - though nowhere near the detention hall. The ballroom and the fifth floor corridor can be found here; as can the cauldron cupboard, which young couples tend to hit instead.