Mathieu’s flat is very clean and just as described. Easy to get to the metro system or grab a cab. The flat is located in a residential and school street so its busy during the day but quiet at night with occasionally noise from your neighbors. Flats in Paris very close to each other so its common to hear people talk or walk from above you if they are loud. Mathieu's flat is on the first floor which I was very thankful for as we had 6 luggages for 3 travelers. It would have been a pain to lug all those luggages up the evaluators or stairs. I always recommend bringing earplugs when you travel so outside noise won't bother you. The place has everything you need to be comfortable. I especially enjoy the heated towel rack and Mathieu has added a personal touch with a very comfortable bath robe for the guests which I really appreciate.
We only used the flat to sleep (the bed very comfortable) and store our luggage as we spent our waking hours touring the city so we never used the kitchen or cute private patio area. We did; however, use the clean fridge was quite useful to store our water bottles, macaroon and chocolate to keep them cold.
He has a binder that was useful for guests. The living room is spacious and comfortable. Since we had tons of luggage we were able to use that space to comfortably sort and organize our luggages before we left for home. This is the largest flat we stayed at during our two weeks in Paris and London as most flats have limited common space.
Would definitely recommend this place.