The Arioso is really nicely decorated and furnished hotel in a great (and safe) area of Paris. I stayed here for three nights in February.
It was one of the few hotels I actually managed to sleep well in (not too hot or cold) and there was no noise from the road or other guests!

The drawback is that it is just too small. There is no bar or restaurant, and breakfast seems to be served in the lobby. I skipped it each time and went around the corner for a much more reasonably priced coffee and coissant.

We found ourselves checked-in at a disappointing so-called three-star hotel (two stars would have been pushing it). A quick tour of the neighbourhood streets yielded only fully-booked hotels, when we spotted the Arioso down a nondescript sidestreet. Not only did they have room but the rates were decent and were upgraded to a Superior room (with a balcony). The staff were young and helpful, the room very pleasant, quiet and comfortably furnished. The bathroom had quality fittings and a clean all-white suite. Not a central location but within walking distance of the Champs Elysee, Madeleine and the Haussmann shops. Probably not worth four stars as no restaurant and limited facilities but to be recommended.