Mathilde’s apartment is a great option for groups traveling. It’s located right around the corner from Norte Dame, but the street noise isn’t bad at all—overall the apartment was quiet, which is usually really hard to find in big cities. The beds were comfortable and the place was cozy for our stay in Paris. The bathrooms both had nice showers and good towels.
One thing I will note is that there is construction crews working on the building next door so we were awoken by very loud drilling sounds (~ 8 a.m. on a week day). This is obviously temporary and cannot be helped by the host. Other than that, the place is great, and I would definitely stay here again in the future.