I'm planning a vacation for late September, early October. The main twist is that I'll be traveling with a 3yo. Our current idea is Paris to Corsica by train and ferry. Right now I'm thinking of 2 days in Paris, and 6 in Corsica (1 more in Paris on return). I think Paris probably has more for a 3yo to "do" so I'm wondering if 6 days in Corsica is not the right balance. So far in my research, I think Corte and Bonifacio sound like a good fit for us. So possibly Marseille or Toulon to Calvi via ferry, then Corsican train to Corte, then rental car for journey to Bonifacio. The 3yo is a train buff (well, me too) hence the focus on train rides.
Advice on any of this, but especially the Corsica leg since I've never been before, would be appreciated. Thanks!