Beautiful but a tourist trap
Although Paris is gorgeous and the architecture is stunning, all of the sites felt like huge tourist traps. They were expensive, crowded, and, though excellent, the crowds and price made them far less enjoyable. It was really hard to find inexpensive, good places to eat too. I wouldn't recommend spending more than 2 days in Paris unless you have some spare cash to spend.
Insider Tip:The second floor of the Eiffel Tower is just as fine as the top.