Question: are there any good daedra?
Answer: "Good" Daedra: Azura - Neutral Good. To quote the Daedric Princes Page: "Azura is one of the few Daedra who might be considered "good" by mortal standards, due to her concern for her followers' well-being." She also cursed the Chimer, but I think she's still quite nice for a Daedra.