We had the smallest room type in the hotel and it was quite small indeed. I really appreciated that there was a fan in the room! We had only a sleeper-sofa and the springs were quite noisy whenever you moved or rolled over, that said, for a sleeper sofa it was not too bad - and there was little space in the room after the bed was opened. Service at the desk was friendly and helpful.
The location on an RER and on the ST Lazare metro as well as just besice Haussmann is great - however the street just outside the hotel and on the corner is home to a large number of homeless people. They did not really get in the way or bother anyone, but when coming back to the hotel at nigth you find yourself walking through 30-40 homeless sleepers with their clothing hanging on all of the poles and boxes in the area. I can imagine that some would not feel so comfortable with that.