My daughter and I had great few days on this houseboat, accentuating our trip to Paris.
We loved the super central location, the great and fast communication from the hosts (incl the in person check in with Sebastien) and the few sunny hours we had where we could sit on the boats roof and enjoy the - quite unique - surroundings.
4 (not 5) stars only because the boat could use a bit of love & maintenance. For example, none of the doors really shut properly, the air inside the boat was quite musty, etc. Also, good to know that the boat is quite narrow (3 meters / 9 feet across). Not bad at all, it just looked a bit bigger to us in the pictures.
If you are looking for a more unique way to experience Paris, this is a great option!!