Hi, The Duke, Enoteca or the Nakara Jardin are all fine choices as others have suggested here.
The Bistrot is not bad, but depends on your budget, it is a pricier alternative than the above restaurants. I am French myself, and I would also recommend the Paris Restaurant, it is very similar food as the Bistrot, traditional French Food, but with much bigger portons at roughly half the price. I myself really enjoy that restaurant and go there regularly.