This is an amazing place to stay. Go for it!
It feels like a home instead of a hotel, with so many small but thoughtful touches throughout that house that you can't help but feel charmed!
The location is perfect, you can just walk to so many places that I barely used my metro pass. And since it's right on the Seine, you can just go down to the riverbank anytime you feel like it.
I would definitely want to stay here again if I'm back in Paris.