I stayed at Pierre's place for a quick weekend trip on my way home from Switzerland to the USA. The location was perfect, just a few doors down from Notre Dame with amazing views.
Pierre was an outstanding host: he cheerfully handled several schedule changes on my arrival day, with excellent and prompt communication through the app. He helped carry bags, left a lovely bottle of wine, gave excellent recommendations on places to go and things to see, and messaged during the visit to see if he could be of further assistance.
The apartment itself was beautiful and functional. It's an older building, and a fifth floor walkup, but everything inside worked very well: shower, hot water, kitchen with coffee maker and everything else you need, clean and spacious fridge and freezer, washer, excellent stereo system, comfortable bed, wonderful lighting, excellent heating with hot water radiators, super clean, and of course the view.
The location couldn't be better. Seeing Notre Dame again and again at all times of day never gets old. Easy access to metro stops, and incredible restaurants all in easy walking distance.
As long as you can handle the stairs (good exercise after all that great french food!) this place and Pierre couldn't be better. I plan to stay here again on every visit.