Location from harry-potter-deathly-hallows by
The Gryffindor common room and dormitories -- where courage goes to slouch in armchairs. During the Carrow regime, it's where the resistance whispers and the DA graffiti appears on walls.
Gryffindor Tower under the Carrows is a place of quiet defiance. Students practice Shield Charms in the dormitories. Neville organizes resistance meetings by the fire. The Fat Lady lets them in without asking questions she doesn't want answered. It is still the place where Harry felt he first belonged, even though Harry isn't here this year.
A round, cozy tower room in scarlet and gold with squashy armchairs, a roaring fireplace, and the Fat Lady guarding the portrait hole. Spiral staircases to dormitories. Now with DA coins hidden under mattresses and resistance slogans scratched into desks.
Also known as: Gryffindor Tower, the Gryffindor common room