For reference, we live in south-east Silicon Valley, stayed here 7 days, & our first trip to Paris.
5 stars all around for Martial's place.
Location, communication, availability, recommendations... we walked to everything so we could see shops & neighborhoods but metros are very close if you want to do that.
The front security door is behind two other security doors but it also has fresh air & a view to the sky, the water pressure is amazing, & the shower is big.
We mainly used the couch for sleeping and the loft twice... I'd rate both firm and thats what we like so we slept great. We mostly ate out but cooked one real meal & everything we needed was provided.
My gf describes it as cozy, warm, quaint, and great location for food.
When we go back to Paris, this is where we will go.