Arashiyama and Sagano is located in the west of Kyoto and very popular for travellers because there are many souvenir shops and restaurants.
When I visited there, it was very crowded. Sagano has its own atmosphere of silence and lonliness.
In autumn, color of trees turn to red and yellow and it is very nice.
Travel Video English Page http://blog.livedoor.jp/lagoonresort/