Having recently finished this I have to say that this series was really a pleasant surprise. I didn't have any expectations and had pretty much no idea what I was about to watch.
Wakamoto Norio as Onsokumaru was pure genius and the overall random comedy was hilarious. And with this anime having no plot or whatsoever that's the most important thing. This show is pure comedy and since it did not fail to make me laugh out loud and often I can only conclude that it's really good.
I certainly wouldn't mind rewatching it some time or another.
Oh, and did I mention that Wakamoto Norio is a genius?