The location is very good, 10 minutes walk from the Louvre museum. It is close to a couple of metro stations, Les Halles mall, cafes, etc.
The check-in went well, we were allowed to drop the bag before the cleaning was finished. (Because we were 4 people, we needed bed sheets for the sofa, and luckily for us - we checked them on check-in, and they were dirty, but it was solved and the cleaning lady has changed them).
The cleanliness suffered quite a bit: When we returned to the apartment after the cleaning was finished, there were still a couple of dirty parts, for example, the home appliances (the toaster had breadcrumbs, the coffee machine was dirty), all the ceiling lamps had a thick layer of dust and in the bathroom, there was someone's hair in a couple of places. Besides this, the floor cleanliness was ok.
The hot water is provided by an electric heater, and sometimes we run out of it when all 4 of us needed a bath + wash the dishes.
The soap, toilet paper, and napkins were not enough for a longer stay (1 week), and we needed to buy some on our own. There was no coffee provided.
There were enough cutleries and dishes. (some of the glasses didn't have a pair, so we mismatched them).
The interior is a bit different from the pictures: small details and there's no more "dedicated workspace".
Besides the cleanliness issue, our stay was quite comfortable, the biggest advantage of the apartment being the proximity to Louvre and transport.