My friends and I had a wonderfully delicious meal at the restaurant you suggested, Le Bistrot du Dome. Thank you for the excellent tip. (Moshulu,I did not order coffee). We'll definitely eat there again, and will recommend it to our friends.
We also went to the much touted (on Chowhound) Bowfinger and fail to see what all the excitement is about. "La coupole" didn't make up for indifferent service and mediocre fare (the oysters were good, but it's not that hard to get good oysters in Paris, I found). We'd never go back, nor recommend it.