Grammar question: When should the punctuation be inside parentheticals and when outside them?

Question

example: private villas that come complete with a private staff (maid, cook, and butler.)

or

private villas that come complete with a private staff (maid, cook, and butler).

Answer 1

Inside when it is a full sentence
I don't like soup. ( my mother made me hate it.)

Outside when it is an explanation about the same sentence. (As in your example.)

private villas that come complete with a private staff (maid, cook, and butler).