We stayed here 3 nights directly after New Years. I would highly recommend it and would definitely consider staying again!
Excellent location right by the Louvre - easily walkable to all of the main sites in Paris.
Staff were always helpful, nothing was a problem for them and their english impeccable.
Good size room for a 3 day stay - ours had access to a nice courtyard which would be awesome in the summer.
Bar in the hotel was always open when we got home in the evening for a nightcap.
Lots of great restaurant choices in the nearby streets, including the street that the hotel is in and its a short walk to the Latin quarter for the cheaper eating options. I'd particularly recommend Carpe Diem just down the road from the hotel.
Overall we had a great experience at L'Empire and would recommend to others.