I'm giving this hotel 5 stars mainly for its excellent and professional service provided by Roberto. (I did not think to get his last name.) When we arrived to check in, we were told that they didn't have our reservation. Fortunately, I had brought my copy of it. Roberto read my copy and saw that plainly there had been a mistake somehow. They did not have a room available for all 3 nights as I had booked, but Roberto did everything within his power to ameliorate the situation and he did it with kindness and grace. First, he gave us an upgraded room for the first 2 nights. Then, for the 3rd night, he found us another hotel of equal standing, reserved it for us and arranged to carry our luggage there himself while we were out sightseeing. But the most important thing he did for us was staying an hour extra of unpaid time to watch our stuff for us. On the day that we needed to change hotels, we had already booked an early morning kayak tour of the Venice Canals. We could not take our passports, cameras, iPhone etc with us because these items could be destroyed or lost if we fell out of the kayaks. Roberto offered to take all of our valuables and lock them up until we got back. I had thought and told him we would get back between 1 or 2 pm, but we didn't get back until 3 pm, but Roberto was still there waiting for us to make sure we got back all of our valuables! It was not his fault personally that the reservation got lost, but he took it upon himself to right it in any way that he could!
As far as the hotel itself goes, it was a very pleasant place. It is a little more like a B&B. The lobby is beautiful and spacious, and gives you the feeling of what a palazzo must have been like. It has a special kind of decorative plaster work, old paintings and fixtures, large long windows that look out onto the plaza, and a piano. For breakfast there is yogurt, fresh pastries, cereal, tea, coffee, a few other things I can't remember now. The room we had was clean and spacious. The bed was comfortable and the bathroom was large. The room also had very good, double-paned windows, which is important. The square is a busy square with stalls selling things and people performing music. Because it's light until about 10 pm there, the noise continues until about 11 pm. But if you close the windows, you hear almost nothing which was a great relief. Also, after 11 pm, it is very quiet.
Since I had booked early in December 2015 for June 2016, we got a special rate of 110 euros per night.
I would go back to this hotel again without a doubt!