Nicole,
We just returned from 2 weeks in France and spent a total of 7 nights in Paris (our first trip) - 4 nights in the rue Cler area and 3 nights near the Sorbonne. We much preferred the Rue Cler area. It was a convenient walk to the Eiffel Tower, Les Invalides, and the Rodin Museum and the metro stop is right there for any other sights. And we found it a lot less heavily touristed than other areas, especially the Latin Quarter. Yes you will encounter tourists toting Rick Steves' book, but still a LOT less than we found in other areas. We stayed at Hotel Eiffel Park just a couple blocks down on rue Amelie and loved it. The rooms were decent sized, it was clean and comfortable, the staff was very nice and helpful, it has a/c and an elevator, and a nice rooftop terrace for relaxing after a long day walking. I booked one of their promotional rates online (it requires prepaying the entire amount, and I want to say they call it "variable rate" online) and paid 90 euros a night. I thought that was very reasonable for a 3 star hotel in a nice area. We had no problems with the pre-payment, in fact it was nice checking out and not having to pay anything. Plus, my room requests that I made with the online booking were all honored so I don't feel like I was shorted due to booking a lower promotional rate. The breakfasts are very pricey in my opinion (12 euros per person) but there are tons of cafes and boulangeries within walking distance where you can get a great petit dejeuner for less than 6 euro.
By the way, if you're staying in this area try out 7eme Sud, a great Mediterranean restaurant nearby. It was fantastic and the people working there are wonderful.
Have a great trip!
Colleen