What kind of place was crusoe looking for to take shelter

Having found himself washed up on a desert island, Robinson Crusoe urgently needs to find shelter. So he hastily constructs a makeshift tent using some sails from the wrecked ship and a couple of poles he's cut for the purpose. Although the tent is strong enough to withstand strong winds during the night, Crusoe knows that he's going to need a more secure dwelling place. In particular, he needs to find somewhere that will protect him from "savages" and wild animals. The tent is inadequate as it rests upon a low, moorish ground near the sea. As well as being vulnerable to attack from natives, animals, and elements alike, it's also nowhere near any supply of fresh water.
After thinking over the matter, Crusoe establishes four essential criteria for any future shelter:
First, it must be in a healthy place and have access to fresh water;
Second, it must provide shelter from the heat of the sun;
Third, it needs to offer protection from both man and beast;
And fourth, it must afford him a view of the sea so that he can see any ships that might appear on the horizon.