When she was in her late 30s, my wife did some work for a very charming guy who was in his late 60s. He was friendly but professional until the job was finished, then he took her out for a celebration dinner. After plying her with champagne and good food, he took her back to his hotel room and quickly charmed her out of her dress and panties.
She said he was both skilled and attentive and had a surprising amount of stamina - she ended up staying all night, and he bought her breakfast the next morning!