Keihan Omiya Station is the bast place to have a stay.
At Omiya Station you can transfer to Shijo-Omiya Station and the Keifuku Randen tramline. This line connects to Keifuku Arashiyama Station and is one of three possible routes to the Arashiyama area.
A Hankyu Tourist Pass is available for 1 or 2-day travel. This might be worth your while if you are planning to use Hankyu Railways between Kyoto, Osaka and Kobe.