It's very very overrated and a bit of a bug bear to get to other places on the Riviera from - You would be much better being up the other end towards Monaco/Nice area. There is a small "little Venice" called Port Grimaud near to St Tropez which is OK for a day trip nearby but that's about it. If you wanted to get to Nice/Monaco - you're talking over an hour as it's a trek up the hill to the motorway and a two hour drive along the coast road.
We have an apartment in Theoule Nr Cannes and find this to be in the middle of where we want to be - it's quite and only 15 mins form the hustle and bustle of Cannes.
Have a look at this part of my wesbite and it gives you things to do and days out on the Cote D'azur - mostly they are all up the other end.
http://www.theoule-apartment.com/cote.aspx
Have a great time wherever you go - it really is a fantastic place.