@stefano Grazie. What I wanted to say (and most likely used the "ne" very very incorrectly) is:
I don't like this moka pot because it's big (I probably should specify that it is TOO big to clarify things) and it serves (or provides) 3 cups of coffee.
And the second sentence, in which I wanted to figure out how to use the "ne" particle should be something like "It is light blue", like "that thing we were talking about earlier has this specific color".