I need help with a reoccurring dream I keep having?

I dream I am in a strange boarding house and every time the dream is the same except thing change slightly. Im walking down a long corridor with what appears to be bedrooms for teenage girls due to seeing past slightly open doors and seeing rock posters, pink walls and brightly coloured sheets on the bed but when I turn a Corner things take a sinister turn and the rooms on the other side are dark and appear threatening. One room is a toilet but even dimply seeing it in the room freaks me out. I often go to one room which I have guessed is meant for me but the room is Spartan with a sheet less mattress, nearly no furniture and a closet that leads up to an attic filled with stuffed toys. I often wake up after walking into this bedroom and finding the attic. Im wondering what this dream means??