extremely beautiful, so going out of your way to see another collection of shrubs and trees around a pond is probably not that appealing to tourists.
Shosei-en is officially part of Higashi-Hongan-ji, a major temple located just north of Kyoto Station. The gardens themselves are located a few blocks east of the temple. They're open 9:00-16:00, and admission is 500 yen.
To get to the gardens from Kyoto Station, head north toward Higashi Honganji on the wide Karasuma Dori, past Kyoto Tower. You'll approach the temple on the left; you want to turn right down the first small side street after the street-side water fountain and pedestrian crosswalk in front of the very large temple gate. This street (Syomen Dori/Shomen Dori) leads directly to Shosei-en Garden's entry gate. It takes about 10 minutes from inside the station to the garden gate.