Lakefront porches are often the main entry during the Summer months. Many people don’t bother with the front door since most often people are outside on the lakeside. If there is not a lot of traffic expected in front of the chairs a six foot depth works. In the pictured case we have a coffee table and some expected traffic and so an eight foot depth was picked. On smaller lakefront lots sometimes the main entry is on the side of the house with a porch or deck that wraps around the house to the water as pictured in the sketch.
Screenshot