They should go to Providence, RI.
Manny has never been there, the city is small (heck - the state is small!), you can make it anywhere in 30 minutes by car, it has some of the best Farmers' markets around, great food scene, since Jennifer lives in New York city, she can come by train and the (equally) walkable Boston is just a short train ride away. Win-win-win-win-win.
If I don't get to vote for a city, I vote for Jennifer.