It's probably pretty good, but it is not fully translated yet. Or more precisely to be honest it probably is fully translated but Message is busy ensuring that the installer that will be released for it is full of shiny buttons or something and we will not see it for quite some time.
A couple of the routes have been translated and released, but I'm waiting for the whole thing before I play. In the meantime you could try Tsukihime instead. Made by the same people, but older (and not quite as pretty looking). Story's good though.