I'm four episodes in, and I'm enjoying it. It's definitely not laugh-out-loud funny like Futurama was but I like Bean, Lucy, and King Zog (not totally sold on Elfo yet). It does suffer from the problem that everything is very Bean-focused so the other characters don't really get a chance to branch out of their tropes, and there are no side-plots during any of the episodes (yet) so depending on how much you're enjoying the main plot that can either make or break the show for you. My other major criticism is that they seemed to have completely dropped the ball on sound design; there are weird periods of silence where we should be hearing things like character footsteps, crowds, etc. It's really weird when Bean pulls aside Elfo or Lucy to whisper to them in the middle of a big crowd and we can't hear the crowd in the background.
The one thing this show does do really well is the art. Every frame is absolutely gorgeous lots of attention to detail in every scene.