Based on the provided source material, there is no information confirming that Duwe is a city in Indonesia. The source identifies Duwe primarily as a surname derived from the Low Germanic word for "dove," which served as an occupational name for individuals who sold or bred doves.
Notable individuals with this surname include Grant Duwe, an American criminologist, and Michael Duwe, a German composer, producer, and musician. No geographical information regarding a city by this name is available in the source text.