How many days you should plan for your vacation to Paris will depend on your interests and the activities you wish to partake in. To fully enjoy the city and all of its main attractions, it is advisable that you stay for at least 3 to 4 days. It goes without saying that if you have more time, extending your stay to 5-7 days or even longer will allow you to explore Paris in greater detail and offer you the chance to discover its hidden beauties.