There is a good amount of fanservice, a bit more than something like "Love Hina". As an Ecchi show it succeeds due to the amount of fanservice, but it seems to do so without distracting you from the actual story. Although the story is weak, it is told well and looks far worse on paper than the fashion it is implemented in.
I found it way more enjoyable as a comedy than most anime, and it felt like it flowed well through the story while covering all the bases a good ecchi/comedy should.
So if you are looking for an anime to just make you laugh, and love seeing girls put the beatdown on pervs, you'll probably like this. It's nothing to completely rave about, but I certainly would lump it in the some of the better anime I have seen.