Wheres nice in Brittany? We want a coast, sandy beaches, away from crowds, village with and cafes / restraunts

We are a couple wanting to drive to Brittany to have a relax, absorb the French way of life, mix with the locals, enjoy the food and most importantly relax, trip around and explore. Would like sandy beaches, safe to bathe. Struggling to find many inspiring pictures, any advice will be great. We have a brochure for cottages just need advice on places. What about Penvins, Trevou Treguignec,Languidic, St Gildas de Rhuys?

I know 2 of the mot beautiful places in brittany.

One in the north of brittany:
the cities of Perros Guirrec, Ploumanac'h and Tregastel (coast named in french "C么te de granit rose" - I live there 4 years) in C么te D'Armor area (zip code beginning with 22)
pictures + tourism information (in french) :
http://www.terresceltes.net/r/bretagne/c...
a lot of pictures :
http://perso.orange.fr/jjcm/

One in the south of brittany:
the city of Quiberon in Morbihan area (56).
http://www.quiberon.com/anglais/index.ph...

(maybe the first place is better than the other one, to have contact with the locals)

Nice is not in Brittany,it is on the "Cote D Azure"!
-sorry couldn.t resist that one.