I stayed at Donovan's place for four nights. It's a small, neat and quiet apartment and Donovan is a very kind and attentive host. City centre is within walking distance, as are bus, train and underground connections, which was great, because the snow wasn't really inviting to do long walks. I didn't mind, because I wasn't in London for sightseeing, but if you are, in other conditions (or more suitable footwear) it's a nice walk over the near Jubilee Bridges or Waterloo Bridge towards the centre (or even Blackfriars or Westminster Bridges). I'd definitely come back here.