looking for nice addresses in Cuba near the beach

dear people : cuban or travellers,

I'm going with my friend to Cuba at the end of the year to spend one week holiday over there.

we would like to go benefit from the beach : cayo levisa, cayo coco, cayo grande, varadero...
do you know some place where we can go please : mates, family, nice rooms to rent, B&B.

many thanks for your replies.

caroline