I have a dislike of shows that rely on Fan service instead of a good storyline, and the blindingly cute stuff that makes me want to vomit Unicorns , But... this.. this is just right!!! The art is not over the top sophisticated or so fast that you want to rewind to catch what you missed, it's simple art without being dumbed down.
And the storyline is actually a wide spectrum of maturity that would appeal to most fans of Anime/Animation. And yeah, it's got it's minor moments of Fan Service, being a guy, I do appreciate that :)