We went to this restaurant on our last day because I was tired of traditional German food and it was close to our hotel. I am so glad we did as this was the best dinner we had during our stay. We sat inside to avoid the smoking and the music was a bit loud at first but we got used to it quickly and it no longer was overwhelming. The staff was very friendly and the service was quick (unlike pretty much every other restaurant we went to during our stays in various cities throughout Germany). They had an English menu so ordering was easy. I asked for another Coke and it came quickly. He stopped to ask us if we were ok a couple of times. I asked for the bill and it came immediately. For these reasons, I left a huge tip (by German standards) and the waiter was very grateful. The food was amazing also. Absolutely delicious burger and fries. Very fresh meat. This will be one of the first places I eat if ever in Frankfurt again. Highly recommended!