I really do enjoy this manga. Why did I rate parts of it so low? I'll explain:
It's a story about a lost kitten taken in by a new family. There's not much material there for anything beyond cute kitty antics but in small doses, and each chapter is very short, I love cute kitty antics.
The art is very cute but not over the top. Since there's really only 3 characters and a few others making small appearances it's not possible for their to be any "wow" art in it. It's the art the story needs but it can get dull. The massive amount of yellow tones used really effected my opinion of the art because it felt down right monotone at times.
It's a cute kitty, a mom, a dad, a toddler and a couple side characters (and I use the term loosely). There's no character development, but then again there doesn't need to be.
Tht being said I do enjoy Chii's Sweet Home and look forward to continuing to read it. If you plan on reading it be aware it's just sitcom style cute kitten antics, but I personally enjoy that kind of thing now and then.