Would the following phrase be considered positive or negative?

a good simmer

positive

Would the following phrase be considered positive or negative?

a reasonably good time

positive

Would the following phrase be considered positive or negative?

effort to see an artist , still committed to growth in his ninth decade , change while remaining true to his principles

positive

Would the following phrase be considered positive or negative?

every visual joke is milked , every set-up obvious and lengthy
negative