I just stayed for seven nights in the BW Crystal Nancy. The location is great: within two minutes walk from the train station and right in the historical centre. The property is pretty old, the room was pretty small (but not terribly small). There is only continental breakfast (although they have eggs that you can boil yourself) and they charge 12 EUR per person for it. Together with the breakfast, we payed about 100 EUR a night. The hotel was certainly not worth that much.