Fournes is located very well if you like to go hiking in the mountains as well as swimming in the Cretan sea. It takes you only 20 Minutes by car to go swimming at the nearest beach and there are nice hiking tours you can undertake close by.
Living midst in the biggest orange plantains in Crete and near the botanic park is a terrific experience.
Having a rental or own a car will be helpful. If you leave Fournes and drive towards Chania you will find after some minutes a nice family restaurant and a good supermarket.