You can describe as much as you want, or be as vague as a one-liner; but it should be related to the room itself.
You can move to another room (not one that's already been mentioned) once someone else posts that they have entered a room.
Once all rooms have been used, the next poster can begin in ANY room they want, to describe what they're doing there...
Rinse and repeat.
Just have fun describing what you - or your avatar - might be doing in that room!
The rooms are:
Ballroom
Billiard Room
Conservatory
Dining Room
Hall
Kitchen
Library
Lounge
Study