Place was comfortable (if you like attics and a whole new experience), though the climb could be tedious. Their beautiful place was secluded and hidden in the middle of the 18th arrondisement (don't let the dodgy exterior fool you) and real near Montmartre. You can get to the Metro nearby.
We didn't get to meet Yannick as she was away but Gerald was a great person to talk to. He was also as charming and funny as in the other reviews. Loved that he made time to make tea for us upon our arrival.
Washroom and toilets are downstairs. Shower is a tad small and could prove a problem for larger-sized individuals.
Great if you want to experience Paris in a different way.