Looking at the Rick Steves recommendations, it seems reasonable to do quite a bit in Paris in two days... but folks keep telling me the traffic is awful, you'll never get it all in, etc.
Is it really all that hard to do D'orsay Museum in the morning, Montmartre in the afternoon, and a twilight trip to the top of the Eiffel Tower? (we are staying near the D'orsay) I mean, obviously one CAN spend all day at the museum or in Montmartre, but assuming 3-4 hours in each location it seems pretty reasonable?
What am I missing?