In keeping with Graziella's suggest to walk and take the bus as often as possible, a suggestion in Frommer's Budget Travel (Jan/Feb 2001, p. 99) advises taking the #24 bus that does a circuit around central Paris, mostly hugging the Seine. The #24 crosses the Seine 24 in it's travels, passing by the place de la Concorde, the Louvre, Pont-Neuf, Notre-Dame, Ile St-Louis, and place St-Michel.

Sandy