Useful dream sign?

I've been keeping a DJ for 3-4 weeks now and I've been trying to find a DS to help me LD. But I couldn't really find any reoccurring elements. Though last night it came to me that in almost all my dreams I'm in a place I know, or think/feel/know I'm there. But during recall I find that the location I was didn't look like the real place at all. (I find it a little difficult to explain this phenomenon) But might this be a useful DS or should I look for something more obvious?

I think you should use that for the time being, but look for something more obvious.