Thierry is an excellent host. He is punctual, responsive, friendly, and insightful. He ensured that we knew where everything in the studio was located, how to use the appliances and commodities, and where useful shops could be found. He definitely went above and beyond to make us feel welcomed to the neighborhood. My fiancée and I didn't need an immense amount of space as this was our first trip to Paris and we planned to be out exploring for the majority of our stay.
The studio is exactly as pictured. The bed is comfortable, there's an ample amount of storage if you pack for 5-7 days, and the location is amazing. If you plan on using the metro to navigate Paris, then you're in for a very short walk. The nearest station is only a 3 or 4 minute walk from the apartment and it has access to the RER B line that runs directly to CDG airport. There are also several restaurants that line the street, Rue de la Harpe, if you're looking for a quick bite at any time of day. I absolutely recommend staying with Thierry if you want to be in a central location and if a ton of space isn't your primary concern.