Sometimes "less" can be "more", and the simplicity of Shan Gui is what counts here in my opinion. The voice acting borders on average, the music is touching and the scenes are breath-taking. The plot itself involves a female tourist being guided by her mysterious friend (another girl) to real locations in the mountains. (Think "Go Go Nippon!" but in China).
The whole experience is like reading a short romance comic while listening to classical music in the background.
Personally, I can only wish that the friendship (relationship) between the two main characters was explored in greater detail. This can be somewhat of a disappointment especially for Yuri fans, unless the writer intends to make a continuation!
All in all, it's as short and straight-forward as a kinetic novel can get. There are no choices to be made to influence the story. Depending on how fast you read, you can finish the entire novel in an hour or less, at the same time, take in all the achievements with no effort. These factors may be pros for some, and cons for others.
Considering the novel's length and it's price (it's better when on sale!) then Shan Gui is a good deal.