We were very pleased with our stay at the Citizen and would return, although we'd probably stay in a cheaper room. The best thing about the hotel is the superb staff, who are earnest and eager to help you. In our experience, such service is relatively uncommon in Paris!
Our room (a more expensive Zen suite) was spacious and thoughtfully un-froufrou. Great bed with duvet, good pillows. Nice bathroom. Overall the design is smart, except for the slightly peculiar, modular, window banquette, which is uncomfortable and can get in the way of closing the curtains. There were lots of windows. It's worth bearing in mind that the hotel is located near a crossroads and that the traffic can be noisy, meaning you don't actually want to open the room windows if you want some quiet. (Perhaps this is less of a problem on higher floors.) The only real disappointment was the included breakfast, but we might be pickier than most people -- in our opinion, since there are many great bakeries in Paris, a hotel could offer really good, fresh pastries and bread.
In terms of location, the hotel is a decent walk away from some of the more exciting restaurants clustered in the 11th but very close to everything by metro.
