If it comes to stalking someone, why just a hotel picture? Any picture, and previous context (e.g., "Miami, I am here"), can be tracked down to the exact location.
I was going to say the same thing. This has little to do with hotels or reflections. Any picture at all with a skyline in it, given a good enough 3D map and some software (maybe the NSA has some already?), should be enough to pinpoint you pretty closely, depending on the nearness of the skyline and the quality of the picture.
