Honestly, finding Sebastien's listing was a huge win. I was having to find some accommodation last minute and Sebastien's listing was great value.
The room is cosy but the large bed is great. You do have to be mindful of noise and sharing a bathroom/toilet but it's a small price to pay for the value and location.
The property was just a short walk away from a Metro station so getting around was easy.
Sebastien was quick and detailed with his communication and his Father was there to let me in and run me through the details and was very friendly! They were both even accommodating of me arriving a little after the advertised check-in window.
I would highly suggestion Sebastien if you're after a great value location to explore Paris from.