Thanks for all the tips. We ended up a several different places. Our first night I followed a chowhound tip and we had a meal at Cafe Constant-- good atmosphere, good wine and tasty food. We didn't make reservations any night of our stay but we were seated immediately at all restaurants we visited-- then again, it is February. Food was good, average price for the place, but nothing special I felt. Slightly cloister phobic on the inside if seated upstairs and very loud. Downstairs looked very comfortable and I would consider enjoying a glass of wine here again. My partner did have delicious steak here, though. I had better duck later at des Beaux Arts.
Second day we had lunch for 10 euros near Sacre Coeur in a charming little place devoid of tourists right outside of the tourist area called Le Poulbot. Flowers all along the door front, bottles of wine outside and inside on the walls, and of course, poulbot art. I couldn't believe the delicious and filling lunch we had for 10 euros (3 course, yes, the price worried us at first!) and the great conversation we had with a delightful French couple sitting nearby willing to practice their English while we practiced our French. 3 rue poulbot 75018. I'd make reservations at dinner time, however, as sitting is limited. We almost didn't eat in the area but one look at this place and you'll be intrigued to go inside.
The last evening we had the most delicious meal of our stay at Restaurant des Beaux Arts, 80 rue Mazarine, in the 6th. Not only was the atmosphere friendly and casual (bit of a neighborhood restaurant feel with lots of seemingly local diners greeting the staff), our hosts, every server and even kitchen staff were more than accommodating to our 7 month old-- the host showed us pictures of his 4 year old daughter and offered up bread while the cook brought out a lady finger for my squirmy daughter. On top of this, the food was divine. A decent amount of menu choices but not too many that the attention to taste was compromised. At first bite of our entrees we looked forward to the main course and dessert-- we were not disappointed! For such a comfortable seating the food here was delicious from start to finish with a reasonable fixed price of 26 euros. Perfect. If we revisit any place, this is on our list.
Situated close to our hotel was another funky gem, the tasty Crêperie des Arts, 27 rue Saint-Andre-des-Arts,with a 9 euro lunch menu (savory and sweet crepe w/ glass of coke or cider). I'm sure they are all great but this cozy gem is wonderful if you are staying in the Saint Michel area.