Hi Dow jones
I bought an appartment in Cannes some years ago..it was "interesting" but we got there in the end with the help of a Dublin woman who lives there.
i will speak to her if you like,otherwise Costorama or Fli are 2 shops that supply most of the stuff you might be looking for.
Also a shop in central Cannes called Monoprix sell delf,cutlery,even groceries,,, reminds me of the muched missed Roches stores in Ireland.
anyway all the best on your purchase..
Pat