You can either travel to Nice by Ferry, Car, Bus, Train, or Plane. I would plan a short time in Nice. Nice is a big city and has a rocky beach. A must do it to take a bus ride to St. Paul De Vence from the Nice bus station. It is about 2euro and takes about 30minutes. St. Paul is a walking, walled in city. It is very beautiful and small. From Nice you can take a 3 hour ferry to Corsica. Which I would highly recommend. Corsica is filled with small towns, beautiful mountians, and beaches. If you take the ferry, take it to Calvi or Bonifacio. Nice has a nice outdoor fruit market and a nice walk up to the top of the city. I would only use Nice as a place to sleep while traveling to other towns. There are many other beautiful places and Nice is just not my favorite. You can also go to Monaco, VilleFrance, and Eze from Nice. VilleFrance is my favorite!! Have fun

If you are travelling with teens, and you want to combine a nice drive with some water park fun, there is a water pack (aquatica) in Frejus.  You can get there on the autoroute, or by the coastal road.