Its a pastime and wonderful way to feel the city you are visiting, I do it all the time. Come in by car, park it, and let the air take me all over the city. underground use to the minimum, as above ground is where all the action and beauty is.
Quiberon is no different, great beach front, wonderul quaint streets, its there for the taking for free and clears the soul, and dont forget to visit the tourist office
Fondest memory: walking the streets of Quiberon is wonderful and good for you.
if you're going to quiberon, please do not forget to go to one of the islands next to it, which are really beautiful. you can easily take a boat to go there. spend two days in "belle ile", or one day hiking on "houat" or "hoedic", mpre tipical.
see the link to see the prices and the timetables. it's the unic company to deserve them.