The rim of the brazier is carved with seven cup-shaped indentations spaced evenly around the circumference. A stone brazier burns fiercely in the center of the room, but its tall white flame produces no heat. This room is thirty feet square, rising to a twenty-foot-tall flat ceiling. Nothing major, but since I find it highly unlikely any party would ever actively damage any part of such a useful room, I dropped a little temptation to do so, Strahd style.
I've made a couple of changes to the room. Unfortunately for the party, Strahd knew they might use it a second time, so he laid a special trap just for them. The second time, knowing about the room, they planned to use it as a quick way out of the Castle after plundering the Tome from Strahd's Tomb. On the first occasion, they used the Brazier Room to escape Strahd's Brides, who were chasing the characters and essentially playing with their food.
Once for the dinner with Strahd, and once to break in to steal the Tome of Strahd.
So, my players have been to Castle Ravenloft a few times.