Chris is a great host and his place is perfect for what I wanted - somewhere nice and quiet in Belleville. It is located a short walk from Metro Couronnes. It’s a really cool and relaxed area, but if you jump on the metro, you can get to the centre within 20 mins of leaving the flat. Check out Pere Lechaise cemetery, which is just round the corner, and Buttes Chaumont Park, which is a bit further away.
I was travelling alone, but definitely big enough for 2. It has a kitchen area as well as two couches in the sitting area.
It is situated on the ground floor, so you can hear other people coming and going, and occasionally walking about upstairs. Although not loud enough to be annoying, I would bring earplugs if you like to sleep in like me!