Small village on the other side of the Loire in Nantes: Trentemoult has many cute colorful houses and a few good restaurants. On Sunday mornings, there is an organic market as well. You can take the boat to cross and use your regular tram/bus ticket for it. You can take the boat near Gare Maritime on the green (1) tram line.
We had lunch at “La Reine Blanche”. The service was a bit slow but the food was good.