The hotel is in a great location, just a minute or two's walk from the Metro, which connects directly to Gare Du Nord, so perfect for those arriving by Eurostar/train.
We had booked two single rooms and these were on the top floor, so nice and quiet. The rooms are in the eaves so some sloping ceilings and quite low ceiling so maybe not good for very tall people - perfect for us though.
The beds are larger than the single beds we have in the UK so this was nice, and they are very comfortable.
The bathroom was small but adequate, with a good water pressure and lots of hot water - however I would warn about the size of the showers, they are tiny. I am 5'6" and the ceiling of the shower was maybe 7" higher than me, so again, not good for very tall people, and the cubicle was very small/narrow, I couldn't bend in it so washing legs and feet was hard.
Breakfast is a standard 'continental' type breakfast - some cereals, breads, cheese, ham, fruit salad, croissants and chocolate pastries, yoghurt. I read some people complaining about the breakfast but it is great to set you up for the day.
You have to leave your room key when you go out, which isnt an issue as reception is 24 hours, however I was quite surprised and worried that whenever we got back no one asked our name or for ID, they just gave the keys when we said the room number - anyone could have gotten in!
All in all a great hotel for the price, but please, be more secure with the room keys :)