Perrine's place is cosy and comfortable. Everything is as described and it had everything you could need for a trip to Paris. She doesn't lie when she says the bottom couch bed is uncomfortable. She even offered for us to change bookings as there were three of us, but we persisted and it ended up being okay. I definitely would try to find something bigger for three unless you are very comfortable with one another, but this is at no fault of Perrine's. She communicated very clearly that the couch bed would be uncomfortable, so we were expecting it.
The room is central and walkable with some great cafes, bakeries, and grocery stores right around the corner. Public transportation is not right outside. It's about a five to ten minute walk, but you might not need it for some places because of the central location.
Overall it was a great place at a fantastic price, but it might be best to avoid it if you are a group of three or until Perrine updates the pull out couch bed. Perrine was a great host to us, and I'm sure she would take care of anybody else as well!