Originally, I booked online via Hotels.com for 4 nights, but I stayed there for only 2 nights because the receptionist asked me to pay by cash. It was quite strange that according to the receptionist, their machine was not accepting both my credit cards (AMEX and Master Card). I was then stressed being out of cash and asked my wife back in the Philippines to send me cash. Luckily, while chatting with a co-participant in a scientific meeting, I was informed that a nearby hotel (Lowen Hotel, strongly recommended) where he was staying costs only 55 Euros/night including a free buffet breakfast. Attracted with a cheaper price (15 Euros cheaper than Ledermuseum) and the free breakfast, I inquired at Lowen Hotel and enjoyed my stay there. They also accepted my AMEX credit card.