After doing quite a bit of research we decided to choose Laurent's listing. His communication was excellent and he sent us perfect instructions on how to get into the building and how to get to the room. Once you get through the glass door you're basically in another building and by appearance isn't as nice as the front entrance. Stay positive! We went up to where the room is and got inside and the room is really nice! Very small but updated nicely. For our trip we used this room to make breakfast, relax in the evening once we returned from exploring, and sleep. That's all. This is not a place to spend all day in and it also isn't a place to bring big bags to. We packed two back packs and that's it. And our trip was only 4 days.
Laurent had several resources in the room for us to find our way around the city, and some other resources about some attractions. We used the metro map every day. The apartment is located near a main Metro stop (La Motte-Picquet-Grenelle) and has 3 Metro lines available (6, 8, 10). That is a big deal for traveling all around the city. It made it so easy for us. The Eiffel Tower is about 8-10 walk away. So great location!
Our only negative was with a neighbor. They were being very loud the first night. But when we messaged Laurent about the issue at a very inconvenient time, he responded. He talked with them and the issue was resolved quickly. The walls are thin but at night it was quite and we were able to sleep well. Also the room is non smoking, however a neighbor next door does smoke and the smell comes into the room slightly. But if you aren't spending very much time in the room it isn't a factor as the smell doesn't linger. All in all the issues were not a big deal because we used the room to sleep and have breakfast.
Lastly the bathroom is not attached to the room. We never had any problems with running into anyone at the bathroom. The bathroom also appeared very clean. I did take a shower and I'm a fairly taller guy 6'2 and 195 lbs or 1.87m and 88.45 kilos. The shower was small. Water pressure was good and the water temperature was good as well.
Overall if your stay here is fairly short and you don't plan on spending a ton of time in the room then this place is perfect. I would recommend it to anyone visiting Paris. Laurent was a great host, seriously one of the better hosts on Airbnb. We went down to meet him and his wife. They were very kind and welcomed us in and offered us drinks. Wonderful people. Excellent stay in Paris!