Biggest advantage is the hotel's location: very close to a lot of good and cozy restaurants, bakeries, bars... & close to Montmartre/Sacre Coeur and public transport.
The staff was very friendly and helpful.
The room itself was clean, and it also got cleaned daily. For us, the room's size was okay, not that big, but since we were only there to sleep, it was okay.
Do note that some of the amenities were not that up to par. The shower holder was broken, and the hot water (granted, it was a good temperature) had very low water pressure. It would also have been nice to have an additional garbage bin in the room instead of only a small one in the bathroom. Lastly, the toilet's opening was on the smaller size (this could be seen as nitpicky, but it was somewhat noticeable - and I'm an average built guy, so I don't have oversized buttocks per se :) ).
In the morning, the cars passing by were also a bit loud. We didn't wake up from it, but once you were awake, you could hear them clearly.
So in short: this hotel is good for people who don't need much comfort for a couple of days, and want a place that is relatively close to bars/restaurants/shops and some of Paris' sightseeings.