Nearly cancelled my reservation because after requesting entry instructions beginning 3 days before arrival, and two renewed requests during the next two days and we did not receive instructions until hours before arrival. Only after my last message to Alberico where I told him that the uncertainty was unacceptable he finally said that he would meet me at the apt which he could have stated after the first request. I nearly booked on a different web site.
Also the people upstairs woke us up around 3:30 to 4:30 am both nights whereas they claimed apt was quiet.
One shower had a hand held sprayer that continued to fall off so that shower was unusable.
One positive is that it is in a great location for seeing the sites and there are many restaurants nearby.