The room was pretty much as advertised. Great value for the money. Although the host was unable to meet us he made all the necessary arrangements in order for us to receive the key as well as any relevant information.
Most unexpected was that the neighbourhood is quiet. Also, the location is great - really close (30 by foot) to Buckingham Palace / Westminster Abbey / Big Ben or, should you be a little lazier ( :-) ) good access to a lot of public transport lanes.
All in all I would recommend it for a weekend stay in London.