My husband, 10-month-old, and I stayed in Charles place for 4 nights during July 2017. The apartment is a gem in Old Paris.
It is decorated with adorable vintage pieces and I felt like I had stepped into a beautiful time capsule.
Charles was very accommodating to our schedule. He met us and gave us a tour. There was some milk in the fridge, some bread, and everything we needed for tea. He even left a bottle of wine. Charles was easy to communicate with. On our last day, we had some issues with transportation which left us stranded until about 1 pm. Charles was kind enough to let us check out late.
I cannot recommend this place enough! It is undervalued and he could easily charge more. The scaffolding was up but the workers did not bother us. They did not work weekends and were always gone before we got home in the evening.
The apt is 600 m from the subway. We felt safe in the neighborhood and there were several cite bakeries, shops, and markets nearby.
A few things to note: (1) It's on the 5th floor but the French consider the first floor the "ground floor." So the floor number is labeled 4. (2) The bathtub is not a shower! You have a showerhead but you will have to sit or crouch down. (Very "old school!")
Overall, I cannot say enough good things about this place.