"Wewe hupendi nini?"

Translation: What don't you like?

[abbyden]

Just 'Hupendi Nini' is also correct?

[NannaDMI]

What is the difference between gani and nini?

[ElMeuNom]

Nini is "what" by itself. Gani is "what" or "which" as in "What/which color is your favorite?"