A German package tourist who finds a noisy room or a closed pool is expected to report it on the spot. The consumer advice center in Hamburg warns: Ohne eine offizielle Mängelanzeige und Aufforderung zur Abhilfe können Sie später keine Ansprüche geltend machen. Without an official notice of defects and a demand for a remedy, you cannot make claims later. It advises getting written confirmation from the local tour guide. Consumer advisers recommend the Frankfurter Tabelle as a guide to compensation. It is a list of percentage reductions per defect, developed by a Frankfurt court in the 1980s. Daytime noise can mean 5 to 25 percent off. The table is a guideline, not binding.