The house is located outsidethe city centre but you can reach it in few metro stops. The neighborhood is not the typical parisian view but I think was definitely ok.
The flat is cozy. Erick lives in the flat and he leaves it for the guests. So you have this home feeling even if you have just arrived in Paris which I think was cool. However, 4 floors with no lift are not for everyone, especially if you carry big luggages.
The flat is not Big but it was definitely enough for me ans my friend over a weekend. The bathroom is small but it has everything you need.
It is absolutely quiet at night even though the streeets have bars and kebab places open till late.
In the end I have a very nice stay and I would recommend this place for 1-2 people but not couples or families.
Thank you erick for all your tips!