We stayed here for 5 nights in September 2022. The flat is located within a 4-5 minute walk of 3 Metro stations. In less than half an hour you can walk to Notre Dame cathedral if you can keep from being distracted by the beautiful everything.
The flat is on the first floor so no climbing flights of stairs to get there. However, there is a flight of stairs down to the bedroom. The stairs are tricky. The ceiling is low so you need to watch your head while descending. I'm tall so I would turn around halfway down and continue backwards on all fours or just really hunch under. After a day or so I got the hang of it. Also, be aware that you need to keep your head away from the back of the stairs when you are downstairs using the locked storage unit. They have pointy corners that are not fun to hit your head on.
Don't let this discourage you from the flat, unless, of course, you have mobility issues. The flat was clean and comfortable and much better than a tiny hotel room.
The flat kitchen has a refrigerator, a cook top, a stove, an electric kettle, a coffee maker with pods and a toaster. There are cups, plates, a couple of very small bowls, utensils and a couple of pans. You can't make a gourmet meal but you could boil eggs or heat up food in a pan on the stove or in the oven. Two really good boulangeries are within a 4 minute walk, along with 3 grocery stores and countless eateries. The fridge is what we call dorm size but it was suitable for what we needed. There is counter "L" next to the sink where you can sit. Four stools are set up there. There is also a clothes washer.
The living area has a pull out couch and a coffee table. Both the upstairs and downstairs have Android TV with Netflix, YouTube and other channels. The couch bed is very comfortable. You can hear street noise in this part of the flat but it wasn't a big problem. The street is one way and doesn't have heavy traffic. There is a dresser in the living area with plenty of room for unpacking your bag. There is also a portable air conditioner in this area that works great.
The bedroom downstairs has a lockable storage unit and a place to hang clothes as well as more clothes/shoes storage. The bed here is comfortable although my feet hung off a little bit but it didn't bother me. There is good reading light by the head of the bed. It was absolutely quiet down there. I never needed earplugs. I didn't find it to be noisy like an earlier review reported.
The bathroom has a shower which was an OK size, not too much elbow banging like sometimes happens because, again, I'm tall. There's a clothes drying rack you can use to dry your clothes if you don't feel like taking them to the laundromat to dry. It's not a huge bathroom but it gets the job done.
This flat gives you more space than a hotel room, plus a kitchen. It's better suited to one or two people but 3 or 4 could stay here. This place may be a bit quirky with the stairs and the "cave" bedroom but once you adjust it's fine. The location is great. You'll pretty much just be sleeping here anyway. Your days will be spent exploring beautiful Paris. I thought it was good value for the price and the host team was responsive when I had a question.