We stayed at Sebastien place only one night. The location is very central, close to the opera. Check-in can be done late? because you entering the place yourself without the host. It's a very small place, has a very small refrigerator, and if you planning to cook something it isn't a place for you. It's less for the family but more for the travelers who need a place to sleep in the center of Paris. The location is also very nice because you have a direct bus from CDG airport to the opera. You can find many restaurants, shops and places of interest nearby. Full access to all transportation. We didn't like that to be able to connect to the internet you need to fill in your name, email... And also if you plan to stay long I think that it will be hard to open all 4 doors that you have to open with the code combinations. But overall for us for one night it was very nice place to stay!