Paris is a efficiently connected city with good public transportation. One can purchase a rechargeable card called "NaviGo" which allows unlimited travel on the metro, RER trains, and buses for as long as the card has credit. The cost is €22.15 for a week. Taxis and rental cars are also available but can be more expensive and not recommended for navigating the city.
For those with more time, add a visit to the Palace of Versailles, Musee d'Orsay or The Louvre. For those with less time, prioritize the top attractions of Seine River Cruise and the Eiffel Tower. In order to make the most of each day, it's recommended to get an early start and plan out the day's itinerary in advance. Finally, be sure to pack comfortable walking shoes and dress stylishly as Paris is known for its fashion-forward culture.