I am thinking of flying over to Dusseldorf to do a quick overnight in early December mainly to see the Christmas markets. I do night photography and love to catch the lights of the markets so I usually am out till they close. I am a single woman traveling by myself so I want to stay in a super safe area. Any suggestions as to which area of the city I should stay in which is pretty safe yet I can get to several of the markets? Any hotel suggestions? I am trying to make this a somewhat low budget overnight and have gobs of points to use at Hotels.com.