PPaul,
Sounds like a great plan. If you've survived L2K, you've survived the difficult part (from what I've heard).
Three of my favourites:
West of Nantes, La Baule. Very friendly little field a short taxi ride from a laid-back seaside town with decent restaurants and a nice board walk.
La Rochelle further down the Atlantic coast. Again, larger but very pleasant sea side stop. Great food, great cognac, very pleasant harbour, city parks etc. A word of advice, if you choose La Rochelle as a destination, refuel on arrival. You may end up hanging around waiting for avgas prior departure.
Finally from my side, Saumur, east of Nantes on the Loire. There are a number of chateau in the vicinity,overlooking the river with which madame would be well impressed.
Enjoy!!