I stayed in the junior suite on the top for floor 3 days, two nights with my partner. I found the check in could have been friendlier, but the room is extremely charming and roomy (Paris standards) for a couple. It was very quiet and cozy, with the sloped roof and beams that are very Parisian style, just be mindful if you are over 6ft tall.
I liked the room a lot, the only downside is there is not a shower, its rather a bathtub with a detached showerhead, under a sloped roof so not possible to stand up, and you have to hold the showerhead at all times.
Aside from that, we really enjoyed staying there, the location is totally perfect, so many cute shops and cafes around.
We didnt try the breakfast so cant comment on that.
Overall, I would return again for sure and would take the junior suite again. The price is right for what you get also.