La Sacrestia is one of the most famous restaurants in Naples.  It serves traditional Neopolitan food.  I had the risotto with baby squid which was excellent.  I have had this many times in Italy and this was one of the best.  It was also on the expensive side so my expectations were higher.  The view is absolutely beautiful.  You look out on the Mergellina harbor.   La Sacrestia has great desserts so save room.  The restaurant takes credit cards which is not always the case in Italy.  Like many things in Italy they are closed in August.