Regine's flat is a great place to stay. I was traveling with my 14-year-old son, and the fold out couch worked well for him. The neighborhood is near many Metro stops, great restaurants, trendy shops (fashion!), and museums. On the first day we walked to the Notre Dame (long walk) and passed the Pompidou center on the way. The Pompidou Center is a great place to explore and hang out!