Unfortunately, the morning of our arrival I received a message that they couldn’t honor my reservation at the hotel I booked and had moved me to their sister hotel. While they were accommodating in finding me another place to stay, I specifically booked this hotel for its central location in the Marais. The quality of the other hotel was perfectly fine, but it was located in a less desirable location on a loud street, and I was offered no reduction of my rate for the change (although they did offer free breakfast for each day of our stay). Not sure if this is a common occurrence, but I would be aware that this is a possibility if you have your heart set on staying in the center of the Marais like me.