RRod NorthWe've stayed here a few times now - mostly as it's incredibly handy for the Eurostar and the Gare du Nord (literally across the road). The quality of the rooms has definitely improved over the last year or so, but as with all Paris hotels, it's vastly overpriced for what it is. See if you can get a room at the front for a great view of the station and the general hustle that goes on there. It quietens down at night and there is good soundproofing. Rooms at the back are quieter, but less interesting.
The area around the hotel can look a bit intimidating, but we've never had any problems there, just don't be stupid. There are good eating options all around so everything you'd need is nearby. Breakfast is available at the New Hotel next door - and this has always been good, if a little difficult to find. Pay for it at the hotel.
The guy on the desk this time was very friendly and fun which always makes a stay more pleasant.