Céline & Bruno's apartment is situated in the perfect location. As with all things in life, you must trade off certain aspects of comfort against price and location, but this was a great stay for us overall.
Pretty much everywhere in Paris is walkable from the apartment. We used the metro only once to visit Disneyland, and we were able to walk everywhere else easily.
Despite being on a quiet road, there are plenty of lovely restaurants and bars a stones throw away.
Perhaps if you a looking for a super comfortable bed (being a sofa bed it is firm and thin and the pillows are very small and flat) and lots of space this might not be the place for you, but if you want to have a lovely and affordable stay in a prime location then this is perfect!
We only met Bruno, but he was extremely friendly and communicative and offered lots of tips for the area.