Stayed here for a week at the beginning of December and found it to be a clean, convenient place not in a tourist area. The front desk staff are friendly and very helpful - making calls for me, following up on a late shuttle to the airport, directions to places in the city, etc.
The room was small (to be expected - I was by myself and I've traveled enough in Europe to know what to expect) but not too small - I could move around the room with ease and of course, in Paris the rooms have that wonderful large windows that open onto the street that add so much light. The furnishings were modern, and the bed was a bit soft but nothing I couldn't deal with. The bathroom was small but clean, modern and the hot water came quickly and in abundance.
Didn't have the hotel breakfast (at 12 euros, it was a bit much for someone who doesn't eat a big breakfast normally) so I can't address that.
The room was relatively quiet - although I probably should have brought earplugs as the hotel got busier over the weekend and the walls weren't not the thickest.
The neighborhood seemed to be relatively safe and quiet, with plenty of restaurants and grocery stores nearby. It is a neighborhood with many Jewish residents so some of the restaurants are closed Friday nights and Saturdays, as are some of the grocery stores but it's not impossible to find other places open.
It's 2 blocks from the Nation RER/Metro stop so it's convenient in that way. And it's a short cab ride to Gare de Lyon so again, convenient!
I would recommend friends to stay there without any reservations. A nice place in a nice neighborhood!