Heh, I haven't really helped you come up with any ideas though. Anyway, like I posted in another thread yesterday, rooms usually represent different compartments of your subcosnscious or self, the larger the room the larger the thoughts connected to it sometimes. In your case it might be as big as a warehouse so the room could represent big life changing thoughts, or higher spiritual awareness. The wallpaper is peeling off, which could represent a sort of skin-shedding of your life - like you are moving on and throwing off the layer or two, figuratively.
Also water is usually connected with your soul or whatever you think of as your conscious, plus the bath has obvious connections with cleansing. I guess the fact that you can't see your ex right away reflects the fact that he isn't in your life any more, but he is still there under the surface. Maybe because he's in the bath you want to cleans him from your thoughts. The dancing women could be different aspects of you, or how you want to be?
Of course this is all just ideas, you are always the best person to interpret your own dreams, but they should give you some ideas and pointers that will help, one way or another.