Serge’s apartment was great for our family of four. The location was amazing just don’t believe your map app if it says the route there is “mostly flat” from the train station and you have small children and a large suitcase! :) Take the bus up the hill. Serge warned us it was uphill so it’s totally our mistake.
The apartment is just downhill from Notre Dame and surrounding shops and just uphill from Rue St. Jean and all the shops and restaurants.
The fully stocked kitchen, extra linens, full size laundry, and location, location, location all made it a extra special trip.