I don't believe there is any such thing that will do that for private rooms. Room Finder will only show you if person has private rooms, not what you are seeking I believe.
-- Tue Sep 12, 2017 4:29 pm --
Read this:
viewtopic.php?f=181&t=11335&hilit=room+finder-- Tue Sep 12, 2017 4:37 pm --
My mistake, if someone is in room D.M's Room Finder says it will tell you that.
buysell/product.php?product_id=803