The location of this apartment is perfect. I barely used public transportation, as my plan was to get to know more of Paris by walking to/from my destinations. 15 min walk to Louvre, Notre Dame, Luxembourg Gardens, 45 min walk to the catacombs, 1 hour walk to Sacre Couer and Eiffel Tower. But if you'd rather take the bus/metro, it's just one block from the apartment.
I also had to work during my 1-month stay. I do a lot of video calls and the internet there was super stable.
René was the best host I could expect. He quickly replied to all of my messages and always helped me when I needed him.
Thank you for everything, René!