"The restaurant is to the left."
Translation:Das Restaurant ist links.
Some words can be der or das, with one usually being more common than the other. Not sure if that applies in this case (maybe they say Der Restaurant in Bavaria or something...), but I learned it as das Restaurant (neuter) and my German dictionary agrees with me, so does Duolingo.
Hmm fair enough, it was just confusing because like I said I had be using der Restaurant until now and it was always mark correct, and when it was introduced it was der not das. Such is life, i'll see what happens in later exercises. Cheers for getting back to me so quickly, much appreciated.