Nigel's flat is a good choice ! We spent a very pleasant moment in it. Nigel sent me by mail all the indications I needed to reach his flat from St Pancras. He was here to welcome us and to give us useful informations. It was completed by the paper he has written to explain the home, the places to see, the good pubs and restaurants around (we tested the Tufnell Tavern and we have really appreciate !), the ways to go to the touristic center of London and so on.
The flat is comfortable, well decorated and in a peaceful area. It has also very good transport links and it's easy to go in the center of London.
To sum up, I recommend it !