We found Co Noi on Happy Cow and it was surprisingly good! The restaurant is very, very simple, the hotel is a "tour bus" style hotel and the dining room serves as the breakfast room for students. Really simple. However, and most importantly, the air conditioning was divine! Our waiter didn't really speak English. I hadn't intended to order the full prix fix menu, but as I don't speak Vietnamese, I smiled and pointed and chalked it up to experience. Expensive? Our lunch included 2 spring rolls, grilled tofu and mushrooms in curry sauce, sliced green peppers and grated carrot, delicious pineapple and vegetable soup and enough rice for a family of 4. We had 2 beers and 2 teas. The bill: 205,595 VND. The VND trades for about 21,000 to the dollar. So, truly what might have been $60 any where else was about $10.00 here. Co Noi is easy to find - on the street behind the opera house, turn right and be brave. The hardest thing about coming here is crossing the streets in Saigon - you close your eyes and pray.
Cons: Not a beautiful place, Not much English spoken