The apartment was amazing and was the perfect home base for our family of six (two kids + grandparents) for a week in Paris. I've left a long review below but the major takeaway is that we'd stay here again in a heartbeat.
The Space
Just like the pictures, the apartment is beautiful. We love modern design and the whole place felt modern, open, and high quality. Even with six of us, we never felt cramped and there was plenty of room to spread out when everyone needed quiet downtime. The supplies were there to cook meals, the television had a good selection of apps like Netflix when we wanted to put on an English language movie, and there were plenty of high end toiletries. Storage space was plentiful for us all to be able to hang our clothes and put them into drawers. We appreciated that each bedroom had a sink and mirror.
A few notes about the layout, which we really liked. Upon entering the apartment, the master bedroom is to the left of the main living area and has its own bathroom with a shower, tub, and toilet. Also on the left of the main living area is a powder room with the only other toilet in the apartment and a sink. The main living area is open and consists of the sitting area with the television, a comfy sofa, two chairs, and a dining table as well as the kitchen and a closet with a washer/dryer. To the right of the main living area is a little hallway with a second bedroom with a queen bed, a third bedroom with two single beds, and a small room with a second shower. The only downside to the layout (which didn't really bother us) is that anyone staying in the two bedrooms down the small hallway has to cross the open living area to access the only toilet outside the master. The big windows in the living area overlooking the street were great and we enjoyed people watching and seeing the city come alive in the morning.
The apartment is on the first floor of apartments in the building but is technically one floor up from the ground level. There is a small but modern elevator or one flight of stairs to reach it. I saw a review that expressed concerns about the windows being unsafe with kids. We didn't share that concern and thought the bedroom windows were at a good height so as not to be an issue. We were there in April and the temperature was in the 50's and 60's and we felt comfortable the entire time, and didn't have a need to adjust the thermostat. There was some street noise as others have noted but in line with what one would expect in any major city around the world.
The building felt totally secure requiring a code to enter the building, a key fab to enter the apartments, and a key to unlock our apartment.
The Neighborhood
The location is really the perfect place to stay when exploring Paris. While the 1st District is a bit more of a tourist/business destination and lacks a little of the neighborhood feel of some others, the location is so central to all other neighborhoods that it's an easy mile walk or less to so much of the city. There are also plenty of restaurants, grocery stores, and bakeries very close by to keep you supplied. A few tips on places we loved in the neighborhood. While the owners recommend Franprix right across the street for grocery shopping, we much preferred G20 just a couple blocks away and an organic grocery called My Bio a couple blocks further down the road from G20. We also preferred the Gosselin bakery for croissants and baguettes in the morning; it became a daily ritual that the kids loved. We also enjoyed the bakery La Parisienne a little further away. The restaurant Loup right across the street is a solid place to eat; it won't win any awards in Paris but it's hip, has nice menu, excellent service, and a good crowd.
The Host
This is a professionally run operation and the communication with Myriam was excellent at every step. She answered all our questions, usually responding in less than 24 hours as we were booking our trip and along the way. She also went out of her way to bend the check in times, accommodate our desire to drop bags off in the apartment early, etc. We appreciated that she met us in person and showed us around, and the welcome bottle of champagne.
There was one minor hiccup in the check in process. We had arranged a couple months before our arrival to drop our bags in the apartment early in the morning when our flight arrived, then walk around the neighborhood until the apartment could be cleaned. The people checking out prior to us decided a few days before our stay to delay their checkout to later that morning (though still in their checkout window) so Myriam let us know we'd no longer be able to drop our bags as early as promised. That led to six of us just off a long flight killing time at Loup across the street with all our bags. The staff at Loup welcomed us with all our bags and happily jumped into action to help us situate them. I don't blame Myriam for this -- she did her best to accommodate all involved and it's a classic problem of managing things with flights that arrive in the morning. What I did appreciate was how Myriam communicated with us when she recognized the issue and how quickly she and her team cleaned the apartment and made things as smooth as possible given the situation so we could settle in quickly.
We will definitely be back to Paris and would absolutely stay here again.