We had a fantastic stay in the studio. The appartment is like described an very well located. The Metro is very near but you can also reach the Notre Dame by a 15 min walk. The area around is very lively with many little restaurants and bars.
The check-in and check-out was possible to any time we wanted, what was very helpfull. The appartment has everything you need and a fully equipped kitchen.
We can really recommend it!