I loved staying at Jean Yves's place. To get there, you pass a road with some bistros, two cafes and a couple of restaurants. It's close to Gambetta metro (sortie 3), in a parallel street to the Père Lachaise cemetery. JY's place is in a tranquil street so that you can sleep adequately. Most of the Parisian buildings were built before 1900, so if you are used to living somewhere very modern, noise-insulated and have a very light sleep, I'd suggest bringing some earbuds :)
The studio has everything you need: a well-equipped kitchen (stove, oven and microwave), a bathroom with a shower and a space outside to eat when the weather allows it. There's a foosball table repurposed into a dining table.
The bed is a sofa bed, which was surprisingly very comfortable, so much you could pass it for a normal one.
You share the entrance with the host - where they keep the laundry room - but you have your separate access. Jean Yves was always at hand if I had any questions, and the studio also has plenty of books and guides about Paris if you need to.
I have lived in Paris, but I never got the chance to explore this area. It is far flung from the stereotypical "Emily in Paris" so dear to some recent tourists but more authentic. Here you truly live like a local, so Instagram-selfie lovers, perhaps this is not your place. However, I loved it. Once I am in Paris, I will book JY's place if available.