We stayed at Janaude's place for 2.5 months, and it was a very good stay. I would 100% recommend this apartment.
The apartment is cosy and very well equipped - especially the kitchen, which is full of cooking utensils + electric stove, oven, microwave. The shower is nice, with a good water flow.
The internet connection is strong (+250Mbps), and the apartment has a desk in the bedroom and a high table in the kitchen. It's ideal for working, even for 2 people who each need a dedicated space.
The location of the apartment is ideal, in the heights of the 20th district. You are less than 10 minutes walk from Metro line 3, which runs throughout Paris. The Père Lachaise cemetery is very close, and for me it's the best place in Paris to take a walk/visit. There are all the necessary amenities within a 5min walk - big supermarkets, bakeries, cafes, etc.
Communication with the host was easy, prompt and friendly. I totally recommend this apartment, whether for a few days or several weeks :)