The animation is a modified cgi that is unusual and quite appealing. Toytown is adorable, and Noddy is precious.
The characters are well-developed, and each has enough personal quirks to be easily identified and understood by children. In other words, each be counted on to have their own standard responses as various problems are put on them.
The use of color and fanciful adaptations of everyday items are very well done. Who wouldn't want to sit down to a cup of chocolate at Noddy's charming kitchen table? Or go for a ride in his amazing convertible car? Imagine a constabulary building with a policeman's helmet as a roof. And renditions of flowers are everywhere.
However, there is an underlying theme of PC reverse racism that is off-putting. Indeed, the "cuteness" can become cloying because of the writers need to treat one character differently than all the others.
The concept of lessons learned, while noble, is, in reality, subjugated to a not-so-veiled warning that the "minority" character is an untouchable.