how to get here
#slytherin cave under the castle
pure sonnet
winter lark
What do you mean
pure sonnet
What do you mean
a watery area in a dark area with 3 or more windows that kinda look like the windows in hufflepuff commen room
winter lark
...I'm afraid I really don't understand, the only thing I can think of that even slightly matches your description is either the common room, which should be obvious as to how to access it, or Apollonia's grotto, which has no windows and is only accessible to Slytherins.