[It's an interesting question, and certainly one Nami wasn't exactly expecting -- but she smiles a little, to herself. It makes sense that after hearing all the bad things, you'd want to hear something nice.]
Well, they give you money even when you don't do anything! And there's pretty much anything you could ask for, here, shops and an amusement park and an island with a big garden.
[She pauses, before adding:] ... and one of my nakama is here. That is definitely something I'm grateful for.