I had a little trouble contacting my Host the week before I left home, which was a little concerning as this was for almost a week's stay. However I managed to contact him via phone.
He kindly sent me lots of information, about how to get from the airport, where the key would be kept, to what was available in the area. He also said that I could call at any time should there be any problems.
Alessandro went to a great deal of trouble to make the stay as comfortable, welcoming and worthwhile as possible, even providing a bottle of wine on the table upon arrival.
The place was as described, in a great area, very close to Victoria Station, which was important to me (as well as complimentary wifi), and lots of good eating places and a Sainsbury's close by.
The apartment is small which I knew and was fine with. The things that perhaps could have been improved:
The bathroom is shared and small. The shower is very tight. A large person would not find it a comfortable start to their day. The second toilet area is also very small, I decided not to use it.
There are no electrical points in the bathroom. I use an electric shaver, so had to do this in the kitchen area. There is also no mirror in the room - luckily I brought my own small one. There is no radio/television. While most people will mainly use the room for resting/sleeping it would be handy to catch the news or have something in the background.

The room is clearly promoted as being on the 4th floor, but there are seven small flights to get there - between 70-80 steps. I managed, as this was at the start of my trip when my case was light, but those with heavier baggage or several items may find this very difficult.

Unfortunately I did not get to meet Alessandro ( I was out most days from morning until late evening), but do think he has done very well with what he has to offer.

This was my first Airbnb stay and it worked out fine for what I was looking for - a nice, clean place that was close to public transport and inner London. It suited me and my needs very well for this particular trip.