Matteo was a very friendly host since before our arrival in Paris when we were booking the apartment. He was always very kind and promptly available and made our family (couple with two children) feel at home since day one. Communication with Matteo was very easy and pleasant: he even helped us bringing our luggage up the stairs to the apartment.
The apartment is charming, with a nice of rue de Turenne from the windows of the living room. It is equiped with wi-fi, tv, a small fridge, a very nice shower in the bathroom and other appliances in good working conditions. The convertible sofa worked out fine as a double bed for the kids (not sure two adults would fit as easily, but probably yes). At our request, Matteo was accommodating to free some additional storage space for us in the bedroom during our stay (some of his clothes, books and other personal belongings are stored in the apartment, which should not be unexpected as part of an Airbnb experience). The stairs were not an issue for us: no elevator actually helps as part of a healthy lifestyle.
The location is very nice and convenient. Le Marais is a very interesting neighborhood with several restaurants, bars, cafes, markets (including closeby the Marché des Enfants Rouges), stores and easy access to metro stations within a few minutes walk. We really enjoyed rue de Turenne and its proximity to Place de la République, rue de Bretagne, Canal Saint-Martin and other interesting places nearby.
We would recommend Matteo's place as a very convenient basis for someone willing to explore a nice, not so touristy neighborhood of Paris.