Nothing to complain about. Just don't be scared with the access to the building, it is simple, as if you were going to some italian apartment but at arriving at the hotel floor everything is solved.
I`ve stayed in this hotel during my honeymoon. We just loved it. A great hotel, clean, nice decor, amazing location close to the Spanish steps, 20 min by foot to the Coliseum, near the Pantheon, Fontana di Trevi and Piazza Navona, everithing on a walking distance. The staff was incredible, we had a problem with the wifi and even though it was a Holiday they arranged a tecnician to fix it. The best wifi in the whole trip.
Even if this is not a regular hotel with breakfast and room service, there is a supermarket near by where we bought wine, bread, and food for breakfast and the hotel arranged for plates and other small things. I trully reccommend this place if you want a nice place and does not care for regular hotel.
If you ca arrange for a room with the view of the piazza the better il will be.
The piazza has a church, a restaurant, a drugstore, an incredible Gelato at Ciampini, and amazing stores such as Louis Vuitton and YSL. Really nice place.