We really enjoyed our stay at the appartement! The location of the appartement is wonderful, walking distance from the Louvre and Centre Pompidou.
The appartment was more than spacious enough for us, as three friends we stayed in separate rooms, and that worked fine! We were too scared to use the loft bed, so we used the sofa beds, which were good quality.
The bathroom was also great, although you will probably touch the radiator a bit while using the toilet. The shower was nice!
The house is located by a busy street, but you actually don't hear any of the noise in the house, which is really nice. The restaurants nearby had delicious food, and there were many boulangeries and patisseries.
All in all, we really recommend staying at this appartement!