Catherine lives in a lovely, comfortable and central apartment that requires a vigorous, aerobic ascent to the fifth floor of this traditional Parisian tenement building. Because of the recent tragic atrocity in the city, one site of which I was underneath on the Metro at the time, like many others attending the airbnb conference I decided to leave Paris a day earlier than originally planned. Catherine and I shared watching the horror unfold on her tv - and I much appreciated her sympathetic, sensitive and intelligent company, wishing we could have spent longer together in more favourable circumstances.