Most everyone above cites valid and enjoyable aspects of what features go best with F&F. All I can add or reinforce in the discussion is width, variability of contour, and randomness of hazards.
Anethma to F&F is narrowness, thick rough and no transition rough, flatness, and formula distances and placement of hazards.
The ball has to have places to bound that maintains rewards, interest, an element of surprise or variability of outcome not always predictable, yet recovery.