When driving on the A87 at Sligachan take the turn towards Drynoch (A863). Before Drynoch turn left (B8009) and turn almost directly left towards Glennbrittle. The road passes the Fairy pools at a hundred meters. There is a parking near the waterfalls, so I suppose it is allowed to drive by car on the small road to Glennbrittle.
I really like the setting of the Fairy pools although they are only between 2-7 meters high. From the car park is is a 2 kilometer walk along the river to see the multiple waterfalls.