Hotel Adler in Grenzach-Wyhlen

I've been visiting this restaurant regularly for over 10 years. The owners are very friendly, and you always feel welcome. Unfortunately, I've noticed recently that some of the dishes have a strange smell – possibly because they're from the day before? I'm not sure. Overall, I've been satisfied – until yesterday. The restaurant was almost empty, with only four guests present. However, there were about 20 flies flying around the buffet. The manager tried to shoo them away, but without lasting success. Some of the dishes were dry, probably because they had been left open for hours. The strong, unpleasant odor from some dishes was particularly noticeable – some had a horrific smell of spoiled fish. An extremely unpleasant, rotten odor also emanated from the kitchen. Since yesterday's visit, I – as well as my partner – have been experiencing recurring gastrointestinal problems. I enjoyed coming here for many years, but after this experience, it was definitely my last visit. I'll also tell my friends who still frequent the restaurant about this. Dear owner, please think about it. It's a real shame that you ended up like this.