German Shorthaired Pointers are not suitable for apartment life. They are more suitable for active people who own a house with a large garden and a high fence. German Shorthaired Pointers were bred to have a lot of stamina and energy which is available all day in the field so exercise is very important to them.
#1 Without enough exercise, they can become jittery and destructive. Be prepared to exercise for at least an hour a day.
Your GSP is enjoying a strenuous hike, a long walk, or even a good game of tag. With enough exercise, the GSP makes an excellent house dog.