I think the only CO & wife that I really liked were John & Jean Flack. Many of the older ones here in the UK will probably remember them. They stayed with us once about 40 years ago. They were a young couple, probably about 10 years older than my wife and I so they are now well into their 80's.
As soon as the meeting finished they were always keen to get home and change into their jeans and get in front of the TV. I could smell the Chanel No. 5 drifting around the house for a week after they left!
George