The service at this hotel was great. The lady at the reception was friendly and helpful. We asked for a quiet room at the top floor, and that's exactly what we got, and we are very grateful for that.
The biggest problem was posed by the heating system of the hotel. We discovered the hard way that they shut off the radiators at around 2 or 3 in the morning. We woke up in a cold room. In addition to the radiator, there was a thermostat on the wall. Unfortunately it hasn't been calibrated well. Turns out that one needs to set it to 27 degrees in order to get 19 or 20 degrees in several hours. In any case, we both got serious colds as a result of being cold at night at the Ambasciatori Hotel, and it has been reducing the quality of our trip for the past week now.
The hotel claims to have on site parking. Turns out there are two parking spaces (for the entire hotel). They are always full. The hotel has a deal with a parking lot that is about a 10 minute walk from the hotel. The walk is through narrow, dark streets, filled with SCARY people. So it isn't safe to pull out a smartphone or GPS there, but otherwise one is bound to get lost. At the parking lot, a dodgy-looking character insists that one leaves the keys with him, so that he could park the car there. So make sure your car is fully insured (lots of banged up cars at that lot), and that you leave nothing in the car as you park illegally in front of the hotel (no other good options) to unload your luggage.