Looking for rental house with pool in countryside (Barcelona)

We have recently retired and want to live in Spain, near to Barcelona (close to our Spanish daughter-in-law's family, not in the city but in the outskirts in the countryside where it is quiet and peaceful and beautiful. We are trying to find a house to rent for approx 10 months in order to be sure we are making the right decision, and to find a house to buy. Any suggestions of where to look would be most helpful.