This series was one of my all-time favorites growing up along with other timeless shows such as Doraemon, Shin-chan, Ninja Hattori and Kochikame.
It's such a simple premise, yet the ingenuity and creativity shown from each episode makes it refreshing. If you are looking for a chill easy to watch anime then your search is over. An anime doesn't need to have a great story, stunning art and music from popular bands. Enjoyment knows no such thing. Sometimes it is just the way characters interact in a particular scenario or just the sheer ridiculous answers the Hagemaru gives to questions that will make you laugh, but you will laugh.
Don't worry about the ratings, reviews and opinions. Just go in for fun.