I am pretty sure that room was part of my ridiculously long (& awesome) quest! Do you rememeber the quest? My favorite part was making everyone count the number of ice cubes in my wall of ice!
Here is a pic of one of those porter rooms.
All the pics on the windows was a photo of the the owner of the room which corresponded with their coffin teleporter. The blue Monster door led to one of the other porter rooms and the Narnia Wardrobe led to the last porter room. Basically you could visit 60+ other player rooms from my three teleporter rooms. It was so much fun and I met so many people putting that all together.