Pierre’s apartment was great for our 5 night stay in Paris. The location is awesome – right next to Charonne metro and within 5-10 mins walking distance of loads of great cafes, restaurants and bars near Bastille, and then only another 10 mins on to Le Marais. Despite being so central it’s also reasonably quiet at night and feels very safe. The space is pretty small but it has been SO well designed, it makes use of every square inch. The stairs are steep but they were fine for us. I think 5 nights is probably about the limit you would want to stay because of the size, so it’s perfect for a long weekend.