This seems to be an underrated series.
Of course it is not really original, but it is cute and well developed, with beautiful art and really good voice actor/actresses, and nice humor as well. The romance in the series is cutely done and the lack of real violence is a nice turn if you are in the mood of something cute and nonsensical but not outright silly and childish (something the series is not).
It is a cute series without being brainless, and with nice and cute characters. A sure watch to lighten up and relax.
I sure recommend it.