Sweet of you

Hello,

Does the expression "It's very sweet of you" work for all the contexts below?

context 1:
Person A: My friend really likes you.
Person B: It's very sweet of him!

Context 2:
Person A: She says that you're very nice!
Person B: It's very sweet of her!

Context 3:
Person A: She made this for you!
person B: It's very sweet of her!

Context 4:
Person A gives a present to person B!
Person B: It's very sweet of you!

Thanks.