This has got to be the best accommodation that I have gotten for a group of 3-4 people. The place is clean and the host is very prompt and accommodating. On the first night, we had dinner at the restaurant where the host was working at, and there was no better way to kick start the trip. The house is located in one of the most vibrant district in Paris and you can get everything you need. Other than the stairs you have to ascend to get to the house, it is perfect. That said, with all the good food that you're going to have in Paris, I am sure you can do with a bit of light exercise.