Food tasted really good but the waitress was totally unfriendly. She talked to me rudely because I had to pay 13€80 and that they accept bankcard with 15€ as a minimum amount. So I asked kindly if I could go to some cash withdrawal and come back while letting her all my stuff and my passport as she would be sure that I would get back to pay. She refused and said rudely that if I only have my bank card to pay I should pay 15€. This isn't nice and note even sure this is legal at all. I refused and said "Oh you don't want to give a tip?". Which I'd never do considering the way she had been talking to me. She said she had then to ask her boss but that she couldn't let me go. She finally came back to tell me that since her boss was away she had no other choice than accepting that I use my bank card (I was still up to get some cash but anyway). The kept being rude for the end of the whole transaction while saying the contrary. She even annoyed me because there was no signature at back of my bank card so she couldn't compare the signature I had put on the bank card ticket and my real signature. I showed her my passport with my signature but still she told "here you're in Germany so you've to have this signature on the back of your bank card".