I will be in Paris in June for about 3 full days. Since I don't have a whole lot of time or money to spend there, I was wondering what would be some great free/cheap ways to get a "feel" for Paris. I just want to experience the sights/sounds/smells and am not overly concerned with seeing all the major sites, although I do plan to visit the Louvre and take pictures of the Eiffel Tower. Is there any particular part of the city that is exceptionally beautiful and/or good for people watching?
Thanks in advance for your help!