Lovely studio in the eastern side of Le Marais, just next to the Picasso museum (which is a highly recommended one). Lovely design, comfortable bed and cozy place. We did not experience any noise during the night, which is an obvious great plus. Nightlife is a short walk away, as is the Metro station, yet there are several nice cafés right in the block (Minimes, La Parle).
Julia and David were very responsive and friendly - they enabled midnight check-in for us and also helped us with getting a taxi to the airport on the last day.
Overall, great stay.