Whimsical
prʲitʃʲudɭʲivyj strɑnnyj no f prʲijatnʌm smysɭʲi
In Russian Причудливый; странный, но в приятном смысле.
Playfully quaint or fanciful, especially in an appealing and amusing way.
Example
"The artist had a whimsical style, full of imagination."