It's a good location, clean and decent, and Marc is a nice enough guy, BUT he really put me off by making it very clear that he was providing a sheer room and NOT a shared living space; when I entered, Marc showed me the room and the shower, but the door to the living room and kitchen remained closed (he made it clear that there are many cafes and bakeries and restaurants around in the neighbourhood where you can sit and consume sthg or do work). He disappeared into the living room after I arrived, and also made it clear he was not interested in a social chat beyond the basic fact exchange of where i was from and why i was in Paris.
I never saw the living room until the very last day when I was leaving. Confined to the simple room alone i quickly felt depressed, which is why i left early.
Hence it is ok if you are fine with JUST having a room (ie bed and a bit of closet space), but not if you for example want a couch to sit on to work on your laptop, put something in a fridge (let alone cook sthg), or have a longer social chat with a 'flatmate'.
You can be better off either renting a study for yourself , or finding a shared house where people are more social and interested in getting to know you. Both are in plenty of supply!