I arrived to the hotel with a confirmation voucher from a hotel booking site that I've been using over the years (without ever a problem.) My flight landed late and I did not get to the hotel until 8pm. Upon ringing the bell, I was told (over the intercom) that the hotel was fully booked and that my confirmation to stay there invalid. The receptionist would not allow me to go upstairs to speak with her, even though it was freezing temperatures outside - she asked me to walk around the area for 15 minutes twice until I insisted to talk to the hotel owner. The owner offered 'an alternative' accommodation in the Canareggio area, back by the rail station and certainly nowhere near the Realto area which was the best feature of this hotel. The owner was half an hour late to meeting me at the 'alternative' accommodation, which turned out to be a random apartment in a dodgy area. When I hesitated to accept staying there, instead of apologizing for the obvious mistake of accepting too many bookings, he became hostile and tried to kick me out of the apartment. I had to stay in a 1 star hotel as everything else was booked out. All this I was appalled by the obvious lack of professionalism/ customer courtesy and would strongly advise not booking this hotel.