When we arrived at Hotel Piacenza, the desk clerk told us he did not have a reservation for us and was full. After fussing a few minutes, he located our reservation and said that it was made through Unitravel.com, but Hotel Piacenza no longer works with this agency. After I insisted that I booked through the Hotel Piacenza website and received a confirmation from unitravel, the clerk argued. Eventually, he said he would let me use the internet to show him how I booked, but when I arrived at hotelpiacenza.com website, suddenly, the computer lost its power supply. He telephoned a nearby hotel and made a reservation for that night for us. I later checked the unitravel.com website and found that they do book Hotel Piacenza. I could not confirm whether unitravel.com is the booking agency used when one books through the hotelpizcena.com website without making another reservation.
However, we ended up better off than if our reservation had been honored. We had chosen Piacenza because it is described as a "short stroll from Bocconi" where my husband had a conference. Piacenza is about half an hour's walk; many of the hotels on the periphery of the Duomo district are a shorter walk to Bocconi, and at least the two I stayed in offer much better value (in terms of a much more upscale experience as far as at least the lobby presented.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC