I agree, try and keep it in the 60F range if not a little less (depending on what yeast you are using) and let it sit for at least two weeks before taste testing, unless it suggests more time. I would think for a good German beer you have to let it sit for a good amount of time. Remember, good beer takes time and the longer the fermentation the longer the conditioning (lager) time. I personally am impatient and tend to jump the gun however, with beer, aging is essential. Happy brewing!