We really enjoyed our stay in the Marais and chose the apartment for its central location and the ability to enjoy one of the oldest parts of Paris. The cafes and restaurants were very good and everywhere as we wandered the streets seeing the art galleries, shops and museums. The bakery next door was excellent and we enjoyed many visits. My five year old was a particular fan of the pain au chocolat.
The apartment was clean, comfortable and cozy. It was very hot outside when we were there, so with the windows fully open, you did get some street noise, but when the windows were closed, you'd never know you were on an active street. The beds were comfortable and bathroom could accommodate all four of us without issue.
Cherline greeted us and was lovely. She met us early at our request and allowed us to get settled even though we weren't supposed to arrive until later in the afternoon. It's just an example of how accommodating and welcoming they were to us and how taken care of we felt. There was even a bottle of wine waiting.
We'd recommend this apartment - we really enjoyed our time there and it was a lovely place to come home to every evening.