Complex sentence: As implied by its name "Rat (h) skeller" (German: "council cellar"), the Rathskeller was a dimly-lit establishment with a bar and restaurant on the street level and a rock club in the basement.
Split into simpler sentences: As implied by its name "Rat (h) skeller" (German: "council cellar"), the Rathskeller was a dimly-lit establishment. It has a bar and restaurant on the street level and a rock club in the basement.