The apartment was just as described in the other reviews, a little smaller than the photos suggest, but perfectly sized for sleeping in and making a simple meal or hot drink. It was very clean, and did have some essentials such as coffee, tea, sugar and salt, but only one roll of toilet paper, which luckily lasted us!
It is situated in a lovely area of Trastevere which is reasonably quiet compared with the heart of the city and an easy walk to access all the famous places. We happened to be there on a national holiday so the construction going on next door wasn't a problem as there was noone working until the Monday morning - however, I can see that this would be noisy and a problem at other times and it would have been nice to have prior warning about this.
Unfortunately although we were told there was wifi, we couldn't find the one for the apartment, but signal was good for a mobile network and so that suited us just fine. There were also no real instructions for the air conditioning, it just so happened that we got it to work out of chance, but instructions would have saved us having to fiddle about with it for so long.
Our flight was delayed on the way there and as a result Guglielmo wasn't there to meet us. The address on the airbnb site didn't send us to the right address either which made getting there a bit challenging, however he was helpful and quick to reply. However, after the first day communication wasn't great at all, and I had asked to check out later than 10am on the Monday when we left - he had said this was fine and even offered to take us to the airport. However, when I messaged him on the Sunday I had no reply until my partner rang him on the Monday morning. We then ended up in a bit of a rush when he turned up at 10.30 saying that we had to leave the apartment because he was waiting for the next people to arrive - note that the apartment hadn't been cleaned and there was no toilet paper there by that point. I have no problem with having to get to the airport myself, but would have preferred to have not been offered a lift if it wasn't something that could be carried out.
We did have a wonderful trip to Rome though, and would definitely be coming back to Trastevere, but probably finding a different apartment to stay in.